Chapter 4: Milly slips into the backseat, her bare skin sticking to the warmed leather as Bee's seatbelts slither across her body like living restraints - the center strap cinches tight around her waist while the side belts coil around her thighs, forcing them obscenely apart to expose her glistening cunt to the vibrating handbrake now pressing insistently against her swollen clit.
The deep, resonant purr emanating from Bumblebee’s chestplate vibrated through Milly’s bones, a contented, mechanical echo of the pulse still thrumming between her legs. She lay sprawled in the immense cup of his hand, naked and spent, the cold ocean wind raising goosebumps on her slick skin. The heat from his metal was the only thing stopping her from shivering.
His single, giant blue optic remained fixed on her, wider than her entire torso, absorbing the sight of her limp form, the sheen of sweat and release on her skin, the evidence of her climax now cooling on his finger. The astonishment in his gaze was tangible, a silent, humbling wonder.
Slowly, with a tenderness that made her throat tighten, he lifted his other hand. He didn’t wipe his finger clean. Instead, he brought the glistening tip to the front of his faceplate, his optic focusing on it with an almost scientific intensity. A soft, inquisitive chirp escaped his vocalizer.
Milly pushed herself up onto her elbows, a breathless laugh escaping her. “That’s… that’s all me, big guy.”
He studied the fluid for another moment, then gently, deliberately, touched the wet metal to the spot where his mouth would be if he had one. A shiver seemed to run through his entire frame, a cascade of tiny clicks and servo-adjustments. His optic brightened a fraction. He was tasting her. Learning her.
The intimacy of it, so raw and foreign, left her dizzy.
With a series of soft, hydraulic sighs, he began to move. He didn’t transform back into the car immediately. He brought his hands together, cradling her gently against his chest armor, which radiated a soothing, deep warmth. He stood, his massive form rising against the bruised purple and gold of the dawn sky, and walked with earth-shaking care to where the Camaro sat waiting, a silent, yellow sentinel.
Only then did he lower her, still in his hands, toward the open passenger door. The transition from his palm to the heated leather seat was seamless. He settled her into the cabin as if she were made of spun glass. The door closed behind her with a hushed, definitive thunk.
She expected him to transform around her, to become the driver. Instead, the engine turned over with a low, idling purr. The dashboard lights glowed to life, soft amber and blue. The radio remained silent. The car sat, patient, humming.
He was waiting for her.
The understanding sparked through her, hot and sudden. He’d given to her. Now, he was asking, without words, for something in return. The driver’s seat was empty. The steering wheel, warm under the rising sun through the windshield, awaited her hands.
“Okay,” she whispered, her voice hoarse. “Okay.”
She slid across the center console, her bare skin sticking slightly to the hot leather. The driver’s seat molded to her instantly, the bolstering embracing her, holding her in a perfect, supportive grip. She placed her trembling hands on the steering wheel. The familiar, pulsing blue heartbeat was there, steady and strong.
The gear shift slid from Park to Drive with a smooth, electronic nudge. Her doing, or his? It didn’t matter. They were one system now.
She pressed the accelerator. The Camaro rolled forward, not with a roar, but with a sleek, predatory glide. He guided them back onto the dirt track, his superior senses navigating the terrain, but she felt every vibration, every minute adjustment through the wheel and seat. It was like riding a powerful, living creature that was willingly giving her the reins.
They didn’t head back to the city. He directed them, through subtle suggestions in the steering, down onto the hard-packed sand of a deserted cove, hidden from the road above by high, jagged rocks. The sound of the surf was louder here, a crashing, rhythmic roar that drowned out everything else. Perfect anonymity.
He rolled to a stop, the tires sinking slightly into the damp sand. The engine settled back into its deep, idling hum.
Milly sat for a moment, her hands still on the wheel, feeling the car’s latent power thrumming beneath her. The adrenaline of the fight, the shock of the cliffside, the raw release—it had all coalesced into a single, sharp point of need. A need to connect, to claim, to be consumed in turn.
She unbuckled the imaginary seatbelt—a human gesture in a profoundly non-human moment—and shifted in the seat. Turning, she knelt on the driver’s side, facing the center console. The car’s interior, usually just a car’s interior, felt charged now, alive with intent.
“I saw you,” she said, her voice low against the rumble of his engine and the sea. “I saw how you looked at me. What do you want, Bee? Show me.”
The response was immediate. The center console between the seats began to retract with a series of quiet, precise mechanical clicks. It folded away, revealing not the standard transmission tunnel, but a smooth, warm aperture in the floor of the car. From within, a component began to rise.
It wasn’t human. It wasn’t trying to be. It was a part of him, an assembly of polished, honey-gold alloy and shimmering blue energy conduit. It extended, firm and purposeful, from the hidden architecture of his alt-mode. Its shape was streamlined, functional, yet undeniably, explicitly phallic. Tapered at the tip, it pulsed with a soft, internal light that mirrored the heartbeat in the steering wheel. It was warm to the touch, the alloy smooth and flawless.
Milly’s breath hitched. The sight of it, so alien and so blatant, sent a fresh, deep pulse of heat through her core. This was him. Unfiltered. Offered.
She reached out, her fingers tracing the seamless joints, feeling the subtle vibration of power within. It was perfectly sized—not to human scale, but to his scale, scaled down, considerate, yet still impossibly large. The tip glistened with a clear, viscous lubricant that smelled of ozone and something sweetly metallic.
“Jesus,” she breathed, her own wetness returning in a sudden, aching rush.
The car’s frame gave a gentle rock, a metallic creak of encouragement. The radio flickered, and a single, raspy, synthesized word emerged from the speakers, strained with static and need. “Milly.”
It was all the permission she needed.
She moved. Straddling the center console, she lowered herself onto him. The rounded, broad tip pressed against her, spreading her open with an insistent, perfect pressure. She gasped, her head falling back. She had been stretched by his finger, but this was different. This was a filling, claiming thickness. She sank down slowly, a moan torn from her lips as the smooth, warm alloy slid into her, stretching her to a breathtaking, burning fullness.
“Fuck… oh, fuck, Bee…”
He was deep, so deep, a pressure against her very core that was both overwhelming and elating. The interior of the car seemed to contract around her, the seats holding her tight, the dashboard lights pulsing in a frantic, visual rhythm. She braced her hands on the roof liner, her body arching as she took more of him, inch by impossible inch, until she was fully impaled, seated in his lap in the most literal, carnal sense.
For a moment, they were still. Connected. The only sounds were her ragged panting, the crashing waves outside, and the deep, resonating thrum of his engine idling in a low gear. She could feel every minute vibration of his systems through the interface, a thrilling feedback loop.
Then he moved.
It wasn’t a thrust. The car itself couldn’t piston like that. Instead, the component within her began to rotate slowly, a corkscrew motion that massaged her inner walls with devastating precision. At the same time, the seat beneath her began a gentle, undulating rise and fall, lifting her almost off him before lowering her back down, controlling the depth and pace.
“Yes! Oh god, like that…” she cried out, her nails scraping against the roof fabric.
The rotation increased, joined by a subtle, thrilling vibration that emanated from the very core of him. It wasn’t the rough buzz of a human toy; it was a deep, resonant frequency that seemed to match the very hum of his spark. It shook her from the inside out, rattling her teeth, liquefying her bones.
She began to move with him, riding the motion of the seat, grinding down onto the rotating, vibrating length inside her. The filthy, impossible reality of it consumed her—fucked senseless in the driver’s seat of a sentient car on a deserted beach, his cock a piece of beautiful, alien machinery buried to the hilt inside her. The steering wheel dug into her back, a blunt, grounding pressure.
The radio crackled to life, not with songs, but with a chaotic, beautiful storm of sound. Snippets of her own gasped curses, “oh god,” “yes,” “don’t stop,” were layered over clips of roaring engines, squealing tires, crashing waves, and soaring orchestral music. It was the soundtrack of his pleasure, a sensory overload mirroring her own.
“Harder,” she demanded, her voice breaking. “Please, Bee, I need… I need to feel all of you!”
The seat’s motion intensified, pumping her faster. The rotation inside her became a relentless, drilling gyration. The vibrations dialed up to a punishing, glorious intensity. Her vision swam. Every nerve ending was on fire, screaming for release. She could feel the heat building in her own core, a tight, screaming knot that was about to snap.
“I’m gonna come,” she wailed, her body tightening like a spring. “I’m gonna come all over your fucking… your fucking… cock!”
The word, crude and final, seemed to trigger something in him. His engine, which had been rumbling steadily, suddenly roared, a deafening, guttural bellow that shook the entire frame of the car and drowned out the ocean. The steering wheel gripped her back painfully hard. The light inside the component buried within her flashed, a brilliant, blinding cyan.
It pushed her over the edge.
Her orgasm detonated, a silent, white-hot supernova behind her eyes before the scream finally ripped its way out of her throat. Her body locked, convulsing around him, muscles clamping down on the hard, moving alloy in a series of violent, involuntary pulses. She gushed around him, a hot flood that mixed with the slick, metallic lubricant, dripping down onto the floor mats.
His roar tapered into a low, shuddering growl that vibrated through her dissolving flesh. The motion inside her slowed, then stilled. The vibrations softened to a gentle, aftershock thrum. The seat ceased its pumping, holding her gently in place, fully speared on him.
She collapsed forward, her forehead pressing against the cool glass of the driver’s side window. Her breath fogged the pane in ragged, uneven bursts. She could feel him, still hard and deep within her, a persistent, wonderful fullness. His systems whirred and clicked around her, cooling, settling.
For a long time, there was only the sound of the waves and their synced, slowing breaths—hers human and hitched, his a deep, mechanical sigh.
Slowly, gently, the component inside her retracted, withdrawing with a slick, smooth glide that made her whimper softly at the sensitivity. The aperture in the floor sealed shut, the console reassembling itself with quiet clicks until it was just a car interior again. The seats relaxed their hold.
Milly slid bonelessly off the console and back into the driver’s seat. She was a mess—sweat-slicked, sand-dusted, smelling of sex and sea and ozone. She felt hollowed out and remade.
The radio cleared its static. A single, perfect song emerged, played at a near-whisper. It was “Wicked Game,” the Chris Isaak version, all yearning guitar and lonely, beautiful despair.
She let out a weak, shattered laugh. “Yeah,” she mumbled, closing her eyes. “That about covers it.”
The driver’s side door unlocked with a soft click. A suggestion. The world, with all its complications, was waiting.
She looked at the scar on the doorframe from her crowbar. Then she looked at the steering wheel, where the blue light pulsed, slow and steady. Her mark of anger. His mark of… something else. Something they had no name for.
With a tired, profound tenderness, she leaned over and pressed her lips to the warm, leather-wrapped wheel, right over the heartbeat light.
The car didn’t move. The song played on. The ocean continued to crash, indifferent. Inside the warm, smelling cabin, something impossible had settled, fragile and real, between them.
He shifted into reverse, his transmission engaging with a soft, precise click. They began to back out of the hidden cove, leaving only tire tracks in the sand and the fading echo of a guitar solo lost to the wind.
They began to back out of the hidden cove, leaving only tire tracks in the sand and the fading echo of a guitar solo lost to the wind. The drive back to the city was a silence filled with thunder. Milly sat curled in the passenger seat, her clothes still in a pile on the floor, her skin tingling with memory and salt. She watched the sunrise bleach the sky of color, its clinical light exposing the cheap motels and power lines of the outskirts. The magic of the cliff, the raw insanity of the beach, felt like a dream already receding. The familiar ache of impossibility settled back into her joints.
Bee felt it too. His silence was heavier now, contemplative. The playful, pulsing heartbeat light in the steering wheel was dormant. He drove with a subdued precision, every shift smooth and economical. The new dents from the drone fight caught the morning light, ugly reminders of a world that wouldn’t ignore them for long.
“Where are we going?” Milly finally asked, her voice rough.
The dashboard screen lit up with a map. Not the route to her apartment. He was heading for the Autobot hangar.The safehouse. The reality of it was a cold shower.
“Bee, I can’t… Sam might be there. Or Ratchet.”
A soft, negative chime. The map zoomed in on the hangar’s schematic, highlighting a small, separate annex usually used for storing human gear. It was offline, isolated from the main bay’s sensors and comms. A blind spot. His own private room.
“You’ve been planning,” she murmured, a faint smile touching her lips.
The steering wheel warmed under her palm for just a second.A confession.
He slipped into the hangar through a rear vehicle entrance, his engine noise dampened to a whisper. The main space was empty, dark, and silent. Ratchet’s tools were neatly racked. The holographic schematics were dark. The neon sign hummed its lonely anthem. He rolled past it all, a yellow ghost, and nudged open the unlocked door to the storage annex.
It was a concrete box, lined with shelves holding crates of MREs, spare tires, and old human electronics. It smelled of dust and rubber. A single, dangling light bulb cast a weak, jaundiced glow. He parked in the center, his headlights cutting off, plunging them into near-darkness. The door clicked shut.
It was a hiding place. A confessional.Theirs.
Milly didn’t move. The adrenaline was gone, leaving a deep, trembling fatigue. She also felt exposed, the cool air of the hangar raising goosebumps on her naked skin. The need for contact, for something to ground her, was a physical ache. “Bee,” she whispered.
The passenger door opened.An invitation. She slid out, her bare feet cold on the concrete. She turned to face him, the car sitting silent and immense in the gloom. She walked to the back door, opened it, and climbed into the dim, leather-scented space of the back seat.
She lay back across the bench, her body a pale contrast against the black upholstery. The car was still.Waiting.
Then the belts moved.
It wasn’t sudden. The two side seatbelts unspooled from their housings with a soft, persistent whir. They didn’t retract. They snaked across the seat, their nylon straps cool and smooth against her skin. She watched, breath held, as they looped gently but firmly around her calves, just below the knees, and pulled her legs apart. The motion was methodical, exact. The buckles clicked into place not in the central receptacle, but into custom ports on the door frames, anchoring her legs in a wide, vulnerable V.
“Oh,” she gasped, the sound swallowed by the quiet hangar.
The center belt followed. It draped across her torso, the strap broad and firm. It cinched, not tight enough to hurt, but with an undeniable, possessive pressure, pinning her shoulders and waist to the seat. She was spread-eagled, held open and utterly immobile for him. A thrill, hot and sharp, shot through her belly. “You like me like this? Helpless?”
His engine turned over. Not a roar, but a deep, sub-audible vibration that thrummed up through the chassis and into the seat, into her bones. The leather heated beneath her, a spreading warmth that contrasted with the cool air on her exposed skin. The vibration intensified, a constant, maddening buzz against her ass and back.
From the center console between the front seats, the handbrake lever began to move.
It wasn’t the simple, upright pull of a human driver. It telescoped upwards, lengthening and firming, its rubberized grip reshaping itself into something smooth, tapered, and purposefully blunt. It gleamed under the faint light, a shaft of polished alloy. It moved with a hydraulic inevitability, positioning itself between her willingly parted, restrained legs.
Milly’s head fell back.“Fuck, yes. Do it. Show me.”
The handbrake pressed forward. The broad, rounded tip nudged against her soaked folds, already slick from the memory of the beach and the current of pure anticipation. It wasn't a frantic push. It was a slow, inexorable invasion. The vibration in the seat seemed to focus, concentrating right where the metal met her flesh. She cried out as the thick, unyielding tip stretched her, filling her in a deep, single, perfect stroke.
It seated itself fully inside her, a solid, vibrating presence that touched her deepest parts. The seat held her fast, the belts anchoring her, leaving her completely at the mercy of the machine.
“God, Bee… it’s so deep,” she moaned, her hips trying to arch against the restraint. The handbrake began to move. It pulled back almost all the way, the sudden emptiness a shock, before driving forward again with that same slow, relentless force. It was a mechanical, piston-like rhythm, in and out, each stroke dragging against her slick, sensitive walls. The vibration never ceased, turning the friction into a white-hot hum.
“You feel that?” she panted, her words tumbling out in a raw, unfiltered stream. “You feel how fucking wet I am for you?For this? For your fucking… handbrake?” The absurdity of the word, the crude reality, made her laugh wildly. “I’m getting fucked by a car’s parking brake. And I love it. I fucking love your weird, alien cock.”
The car’s response was a symphony of appreciation. The engine revved, a guttural growl that shook the entire frame. The dashboard in the front seat lit up in a wild, chaotic strobing of colors. The radio surged, a burst of static and squealing feedback that resolved into a pounding, driving drum solo.It was primal. Approving.
The pace of the handbrake intensified. The strokes became faster, harder, slamming into her with a precision no human could match. The vibration ratcheted up to a fever pitch, blurring her vision. She was babbling, lost in the sensation.“Yes!Right there! Make me come on it! I want to soak your fucking interior, you beautiful, crazy thing!”
The coil inside her, wound tight since the cliffside, since the drone fight, since the first time he’d looked at her with those blue eyes, snapped.
Her orgasm was a seismic event. A raw, screaming release that tore through every nerve. Her body bucked wildly against the restraining belts, a desperate, futile effort to move. A gush of hot fluid rushed out of her, pulsing around the invading metal with each contraction, a torrent that spilled onto the leather seat beneath her with a sound that was obscenely loud in the enclosed space. She screamed, a long, ragged sound of pure, shattering ecstasy.
The car convulsed around her. The doors rattled in their frames. The headlights blazed on and off in a frantic strobe. The roaring engine crescendoed into a deafening, metallic scream of triumph that echoed off the concrete walls. The handbrake pushed deep, hilted inside her, and held there, pulsating slightly as her climax slowly, shudderingly subsided.
Silence descended, broken only by the sound of her ragged, sobbing breaths and the faint, cooling tick of his engine. The belts retracted with a soft, sighing whir, releasing her trembling limbs. The handbrake gently withdrew, slick and gleaming, retracting seamlessly back into the console.
Milly lay boneless, utterly wrecked, floating in a pool of her own release. The smell of sex, sweat, and ozone was overwhelming.
The driver’s side door opened. Then the back door beside her. Cool air washed over her heated skin.
She didn’t have the strength to move. A moment later, a small, flexible nozzle extended from the door frame. A gentle, warm spray of water, followed by a puff of scented, conditioned air, cleaned her stomach and thighs with a meticulous, tender care. It was clinical and intimately devoted all at once.
Finally, the front passenger seat heated powerfully. An unspoken suggestion.
With a groan, she pushed herself up, her legs feeling like water. She stumbled out of the wet back seat and collapsed into the warm, welcoming embrace of the front. She was asleep before her head hit the headrest, lulled by the deep, steady, contented purr of his engine.
She didn’t hear the main hangar door slide open hours later. She didn’t hear the heavy footsteps, or the familiar, irritated grunt.
She was only awakened by the violent, sudden wrenching open of her passenger door and the blinding glare of a flashlight in her face.“Milly? What the hell—?” Sam’s voice, shrill with confusion and anger, cut through her blissful haze. The flashlight beam danced from her nakedness to the soaked back seat, to the scar on the door from her crowbar, and finally to the silent, watchful dash of the Camaro. His expression morphed from anger to dawning, horrified comprehension. “Oh, my god.No. Tell me you didn’t.”
Behind him, in the doorway of the main hangar, the towering forms of Ratchet and Optimus Prime stood silhouetted against the light, utterly, profoundly still.