The salt spray of the ocean was quickly replaced by the stagnant, metallic air of Silver Ridge's underbelly. Maya navigated the boat into a forgotten drainage canal that fed into the city's derelict sewer system. They traveled in silence, the only sound the low thrum of the engine echoing off the slime-slicked brickwork.
Eventually, the canal narrowed, leading to a rusted iron gate that Maya forced open with a crowbar. Beyond it lay a sight frozen in time: Station 9, an abandoned subway hub that had been sealed off during the city's rapid industrial expansion decades ago.
"My father used to maintain the lines here," Maya whispered as they pulled the boat onto a concrete ledge. "The Sterling maps don't even show this level. It's a dead zone for their satellites."
Solomon groaned as he stepped onto the platform, his legs unsteady. Rami helped him to a moth-eaten bench. The station was a cavern of shadows, lit only by the flickering emergency lights that shouldn't have been working. The tracks were choked with dust, and the walls were covered in layers of graffiti—some of it modern, some of it looking like ancient petroglyphs carved into the concrete.
"We can't stay in the open," Rami said, his eyes scanning the darkness. "Corvus will have the city's power grid mapped. If we trip a sensor, he'll be on us in minutes."
He sat on the floor and pulled the wooden box from his satchel. The air in the station felt heavy, vibrating with a frequency that made the hair on his arms stand up. He opened the lid.
The Millennium Puzzle was glowing with a faint, pulsing blue light—a stark contrast to the golden warmth it had emitted on the island.
"Something's wrong," Rami muttered.
He reached into the box to touch the central core, but his fingers brushed against a piece that felt... different. He pulled it out.
His heart nearly stopped.
It was a fragment of the puzzle, roughly triangular, but it wasn't made of the same weathered, Egyptian gold as the others. This piece was made of brushed titanium and carbon fiber. It was etched with micro-circuitry that mimicked the ancient hieroglyphs, and at its center was a tiny, pulsing LED that blinked in sync with his own heartbeat.
"Grandpa, look at this," Rami said, his voice trembling.
Solomon leaned over, his eyes widening behind his cracked glasses. "By the gods... a modern fragment? That's impossible. The puzzle was forged three thousand years ago in the fires of the desert."
"It's not just modern," Maya said, leaning in. "Rami, look at the etching. That's Sterling Corporation serial coding. 'Project: Synthesis. Unit 01.'"
Rami gripped the piece. The moment he did, a holographic interface projected into the dusty air of the subway station. It wasn't a message from the past, but a data stream. Schematics of the puzzle flickered by, showing how the Sterling engineers had tried to "patch" the missing pieces with synthetic substitutes.
"Corvus didn't just want to solve the puzzle," Rami realized, a cold realization washing over him. "He wanted to reprogram it. He was trying to build a digital cage for the Pharaoh before the spirit even woke up."
Suddenly, the station's intercom system, silent for forty years, let out a burst of static.
"You have a keen eye for engineering, Rami."
Rami scrambled to his feet, his silver Duel Disk snapping into place. Maya grabbed a heavy iron pipe, and Solomon retreated toward the shadows.
A figure stepped out from the darkness of the subway tunnel. He didn't wear a tactical suit or a gray coat. He wore a simple, tailored black suit and a mask that was a smooth, featureless mirror. On his arm was a Duel Disk that looked like a sleek, liquid-metal blade.
"I am Mirror-Link," the figure said, his voice echoing from everywhere and nowhere. "I am the lead architect of Project: Synthesis. You have the prototype fragment. It belongs to the Collective, not to a boy who plays with sand."
"I'm not giving you anything!" Rami shouted.
"Then you will be deleted from the system," Mirror-Link said. "In this station, the concrete acts as a conductor for my Virtual-World Deck. Here, you aren't fighting ghosts. You're fighting the code."
[SUBWAY DUEL: RAMI VS. MIRROR-LINK]
[Rami: 5000 LP]
[Mirror-Link: 5000 LP]
"I activate the Field Spell: Digital Dystopia!" Mirror-Link declared.
The subway station flickered. The concrete walls dissolved into lines of green code, and the rusted tracks transformed into glowing data streams. Rami felt his body tingle as if he were being digitized.
"I summon Cyber-Infiltrator. And I activate the effect of your 'Modern' fragment!" Mirror-Link pointed at Rami's bag. "Since you hold the prototype, my monsters gain 1000 attack for every 'Ancient' piece you have in your possession!"
[Cyber-Infiltrator: 1200 -> 3600 ATK]
"Wait, that's cheating!" Maya yelled.
"In the digital world, it's called an exploit," Mirror-Link replied. "Attack his Life Points directly! Data Breach!"
The digital warrior lunged, its body flickering like a corrupted file. It passed right through Rami's chest, leaving a trail of pixelated fire.
[Rami: 1400 LP]
Rami hit the floor, his vision glitching. The damage felt like a series of electric shocks to his nervous system.
"I end my turn. The code is writing your obituary, Rami."
Rami struggled to his feet. He looked at the titanium piece in his hand. It was vibrating, trying to sync with Mirror-Link's field.
"You think you can rewrite history?" Rami whispered. He looked at his deck—the "Forbidden Foundation." "You think code is stronger than the earth?"
"I draw!"
Rami pulled the card. It was Sovereign of the Silicon Sands.
"I activate the effect of the 'Modern' piece!" Rami shouted, shocking Mirror-Link. "If you can use it to buff your monsters, I can use it to overload your system! I tribute the Titanium Fragment to Special Summon The Sovereign of the Silicon Sands!"
The air in the station screamed. A massive warrior appeared, half-made of ancient, crumbling stone and half-made of glowing, blue-circuitry. It was a bridge between the two worlds—a monster that shouldn't exist.
"His ability!" Rami's voice took on a terrifying clarity. "System Wipe! When this monster is summoned using a 'Synthesis' piece, all Field Spells are negated, and your monsters lose attack equal to their own base power!"
The green code of the station shattered. The concrete returned, hard and cold.
[Cyber-Infiltrator: 3600 -> 0 ATK]
"No! My field! The architecture!" Mirror-Link stumbled back.
"Now," Rami commanded, "Sovereign, attack his Infiltrator! Binary Burial!"
The warrior raised a hand that was a mix of bone and wire. A blast of golden-blue energy erupted, consuming the digital monster and slamming Mirror-Link into a rusted support pillar.
[Mirror-Link: 0 LP]
The digital world vanished for good. The station was once again just a dark, dusty hole in the ground. Mirror-Link lay unconscious, his mirrored mask cracked and showing nothing but static.
Rami sat down on the tracks, his breath coming in short bursts. He looked at the titanium piece. It had turned dull, the LED dead. It was no longer a part of the puzzle. It was just trash.
He looked into the box. A heavy click sounded.
One of the real, golden pieces had moved, filling the gap where the synthetic one had tried to fit.
[23 PIECES REMAINING]
"They're trying to replace the Pharaoh," Rami said, his voice hollow. "Corvus isn't just trying to win. He's trying to build his own king."
Solomon walked over and put a hand on Rami's shoulder. "Then we have to make sure the real one wakes up first. But we have to be careful, Rami. The closer you get to the end, the more the world will try to break you."
Rami looked into the darkness of the subway tunnel. He could feel the 23 pieces calling to him, a low hum of ancient power.
"Let them try," he said.