The sun dipped low behind the jagged cliffs outside Jasper, Nevada, bleeding orange and gold over a world that had seen stranger things than sunsets. The asphalt still radiated heat from the day, soft mirages wavering off the horizon like steam rising from old memories. Jack Darby stepped out of the garage where he'd spent the last six hours elbow-deep in a busted engine, sweat sticking his shirt to his back.

He was older now. Twenty. Taller, more solid. There was a quiet to him people sometimes mistook for distance—but those who knew him, really knew him, understood it wasn't that he didn't care. He just listened harder than most.

The whine of a high-performance engine broke the stillness, crisp and unmistakable. Jack turned toward the sound before it even came into view.

She was always right on time.

The bike pulled up to the curb like it owned the street—sleek cobalt plating, chrome smooth as glass, and that same unspoken tension in the way it idled. Alive, somehow. Waiting.

The hologram on the seat—Sadie, the human projection Arcee had used for years—flashed a quick smirk. "Long day?"

Jack gave her a tired smile and wiped his hands on a rag. "You could say that. Took two hours to convince a guy his check engine light didn't mean his car was gonna explode."

Sadie chuckled. "Humans and their warning lights."

He mounted the bike without another word. She peeled off into the desert, the town falling behind them with the heat and the noise.

They didn't talk much on the way back. Jack didn't need to. When it was Arcee under him, even in vehicle mode, it wasn't silence—it was something else. Steady. Familiar. A kind of quiet that made the world feel smaller and less chaotic.

When they arrived at the base, the garage doors rumbled open like the mouth of a sleeping beast. Inside, the lights cast long shadows on the walls, and somewhere deeper in the hangar, Bulkhead's booming laugh echoed, followed by Miko's voice firing back like a machine gun of half-English, half-Japanese slang.

Arcee's engine went quiet. Sadie flickered off with a shimmer of blue light—and the bike began to shift.

Jack stepped back as the metal flowed upward in a way that made his heart stutter—not into the familiar towering frame of a Cybertronian, but into something else. The transformation was smoother than her usual. More fluid. The metal folded in on itself, reshaping, resizing... until it was her.

But human.

She stood barefoot on the cool concrete floor, looking up at him with those same electric-blue eyes. Her form was tall and lean, athletic, the body language unmistakably Arcee—still alert, still brimming with controlled energy—but she was human now. Skin a warm bronze tone, hair a dark cascade with a slight blue sheen, like polished obsidian in the light. She wore a flowing blue sundress, soft fabric patterned with white flowers, cinched gently at the waist. Her arms were bare, and the breeze from the open hangar door played with the hem.

Jack blinked.

She gave a crooked smile. "Not bad, right?"

"You're..." He swallowed. "Wow."

"Ratchet finally cracked the conversion tech," she said, stepping closer. "Human-form simulation. Organic systems. Feels... weird. Not in a bad way. Just... different."

Jack looked her up and down. "You're breathing."

"I know," she said. "I've got a heartbeat. A digestive system. All of it."

She paused.

"And—" she grimaced "—apparently that includes monthly biological events."

Jack winced. "Oof."

"Yeah. That was a surprise this morning. I thought something was wrong with the transformation. Called Ratchet in a panic. He ran a scan and just said, 'Oh. That.' Like it was no big deal."

"Let me guess," Jack said. "You hurled something at him."

"A box of tampons. Didn't even open it. I still don't trust them."

Jack chuckled. "Welcome to the human condition."

"Some parts I could've done without," she muttered. "But hey... clothes are kinda fun."

He gave her a half-grin. "You look amazing."

Her expression softened. "Thanks. I wanted this to be a surprise. Ratchet said I should test the form with someone I trust." She shrugged. "So. Here I am."

Before Jack could answer, the sound of heavy footsteps approached—and then came the unmistakable, rumbling voice of Bulkhead.

"YO JACK!" he called out from down the corridor. "Arcee's got legs and I've got plans! Miko's dragging me to this punk show in Vegas and says I'm gonna be her wingman."

Jack turned as Bulkhead lumbered in, stopping short when he saw Jack's expression.

Arcee tilted her head. "What plans, exactly?"

Bulkhead grinned. "Saw what you and Ratchet were working on. Figured, hey, why not try it? Built myself a human holoform last night. I wanna see what the whole 'nightlife' thing is about. Miko says I'll blend in better if I don't show up looking like I bench-press tanks."

Jack raised an eyebrow. "You're doing this to help her hit on girls?"

Bulkhead nodded enthusiastically. "She says I've got good instincts. We did recon missions together, remember? Wingman duties are basically the same thing—identify the target, block the competition, keep the momentum."

Arcee folded her arms. "This base is getting weird."

"Speak for yourself," Ratchet's voice said from across the hangar. He stepped out from the hallway, optic glow low, posture typically tired.

Jack looked over. "Hey, Ratch. Thanks for helping her with the... transformation."

Ratchet gave a vague grunt. "Just doing what needed to be done."

"You've been spending a lot of time with my mom lately too."

Ratchet froze. Arcee raised an eyebrow.

Jack stared at him. "Just saying."

The medic cleared his throat. "She's been... assisting me with domestic data assimilation."

Jack smirked. "Sure."

Ratchet narrowed his optics. "You have no proof of anything."

And with that, he turned on his heel and vanished back into the lab.

Arcee snorted. "That's not suspicious at all."

Jack just shook his head. "I feel like the Autobots are going through something."

Bulkhead slapped him on the back. "C'mon, man. You think you're confused? Wait till you see me in a leather jacket and gold chains. You're not ready."

Arcee smiled quietly and stepped closer to Jack, brushing her fingers against his. "Hey. I wanted you to see me like this first. Before the others."

Jack looked at her. "I'm glad I did."

And when she leaned in and kissed him—warm, real, familiar in a completely new way—he decided that maybe things weren't getting weird.

Maybe they were just getting started.