For a long moment, no one spoke.
Only the soft crackle of the dormant prototype's overheated circuits filled the corridor, like the machine was exhaling after a long battle it never wanted to fight.
Ash's heartbeat finally slowed, but not the tightness in his chest.
The Founder stepped closer to the machine's fallen body, studying its core panel with a trembling calm.
Silva kept her distance, arms crossed, eyes narrowed.
"The shutdown wasn't voluntary," she muttered. "It was triggered."
The stranger nodded.
"Yes. Something else forced it to go offline."
Palo looked from the prototype to Ash.
"Triggered by what?"
Ash didn't want the answer he felt forming in his mind.
Before anyone could speak, the entire hallway lights flickered.
Once.
Twice.
Then,
BOOOOM!
A deep seismic tremor shook the facility. Dust rained from the ceiling. Distant alarms wailed somewhere below them.
Silva grabbed the railing.
"What was that?!"
The Founder's expression darkened.
"It came from the lower vault."
The stranger's face went pale.
"That's impossible. We sealed that level years ago. Nothing should be functioning down there."
Ash felt the spark burst sharply inside him , hot, fast, like it recognized the vibration.
Like something was calling back.
Palo stepped in front of Ash instinctively.
"Founder, speak clearly. What's in the lower vault?"
Silence.
Then the Founder finally answered:
"ZB-0 wasn't the only prototype created."
Ash's stomach dropped.
Silva's eyes widened.
"You mean.."
"Yes."
The Founder turned toward the stairwell, voice low and grim.
"There were multiple units designed during the project's second phase. All more advanced, all more dangerous… and all sealed away after ZB-0 malfunctioned."
The stranger rubbed their forehead.
"They weren't supposed to activate anymore. Their cores were completely isolated from the main grid."
"Unless something inside the facility synced with them," the Founder said.
He turned slowly toward Ash.
Ash froze under his gaze.
"No," Ash whispered. "I didn't do anything."
"Not intentionally," the Founder said. "But when your spark surged, the systems reacted. Something in the vault responded to you, strongly enough to force ZB-0 into shutdown to make room for its activation."
Silva swallowed hard.
"So… what just woke up?"
The alarms suddenly cut off.
All at once.
The silence that followed felt wrong.
Too heavy.
Too expecting.
Then, from the lower level,
a metallic chime echoed through the ventilation ducts.
Not an alarm.
Not machinery.
Something synthetic.
Slow.
Measured.
Like a booting sequence.
Ash felt a shiver run down his spine.
Palo stepped closer protectively.
"Ash? What is it? What do you feel?"
Ash pressed a hand to his chest.
"I… I don't know. But something's awake. And it's not confused like ZB-0."
The facility lights flickered again.
A voice ,distorted, distant, drifted through the speakers.
Soft.
Cold.
Almost familiar.
"Ash… detected".
Ash stepped back like he'd been hit.
Palo grabbed his arm.
"Tell me you didn't hear that."
Ash whispered, "I heard it."
Silva looked terrified.
"The vault prototypes shouldn't have vocal modules. What kind of unit is speaking?"
The stranger turned to the Founder.
"Don't tell me they activated that one."
The Founder didn't reply immediately.
Which was answer enough.
Ash managed a shaky breath.
"What… what exactly is that one?"
The Founder closed his eyes briefly before saying the name:
"Unit ZB-0 Alpha."
The stranger whispered, "The perfected version."
Silva backed away.
"That thing was never tested. It wasn't just a prototype.It was a full successor model. Command algorithms, emotional mimicry, combat adaptation, everything ZB-0 couldn't handle."
Palo's jaw tightened.
"So it's smarter. Stronger."
"Worse," the Founder said.
"It was designed to be stable."
Ash stared at him.
"Stable for what?"
The Founder met his eyes.
"For your replacement."
Ash felt the world tilt for a second.
Palo steadied him.
"Founder, enough riddles. What do you mean replacement?"
Before the Founder could answer,
CLANG.
A harsh metallic sound echoed from the lower stairwell door.
Then,
CLANG. CLANG. CLANG.
Something was climbing the steps.
Slow.
Deliberate.
Unhurried.
The facility lights dimmed as if its presence drained power.
Ash's pulse hammered.
Palo moved in front of him again, fists tight.
"No one gets to him. Not this time."
The Founder raised his hand in warning.
"Palo, stay back, Alpha isn't like ZB-0. It won't hesitate. And it won't malfunction."
Silva whispered, "It's coming straight to Ash…"
Ash swallowed.
The spark inside him responded. Not in fear,
In recognition.
He whispered,
"It's coming because it knows me."
The stairwell door groaned.
Then..,
With a slow, heavy motion,
it pushed open.