The Blueprint Prince-Chapter 48 - 47: The clogged Artery

Zack, grab the battery," Arthur ordered, stepping off the Mag-Lev maintenance walkway.

Zack reached into the train’s dashboard and yanked out the glowing blue Class-C Core. The train’s lights died instantly, plunging the tunnel back into darkness, save for their flashlights.

"It’s getting hot," Vivian noted, wiping sweat from her forehead. She unzipped her sanitation overall to the waist, revealing her leather armor underneath. "And it smells like... sulfur."

"That’s the pressure," Arthur said, his voice echoing in the vast, circular chamber they had entered. "We are standing inside the Main Valve Assembly."

The room was colossal. It was a dome made of seamless white metal, hundreds of feet wide. In the center, suspended over a pit of glowing magma, was the Processor Core—a sphere the size of a castle.

Massive pipes—Ley Line Conduits—fed into the sphere from the walls. They pulsed with light: Blue, Green, Red.

But one pipe—the largest one, labeled SECTOR 7 (CAPITAL)—was dark.

It wasn’t pulsing. It was bulging. The metal was distended, groaning under immense internal pressure. And wrapped around the connection point was a massive, pulsating mass of black sludge.

"The Blockage," Julian whispered, aiming his rifle light at the mass. "It looks like a tumor."

"It’s Mana Slag," Arthur identified, walking along the gantry toward the sphere. "When mana gets too dense and stops moving, it calcifies. It turns into a semi-solid waste product. That sludge is basically the cholesterol of the planet."

"And it’s clogging the main artery," Zack added, looking at the readings on his iScroll. "Pressure in that pipe is at 99.4%. If we poke it, it might burst."

"We don’t poke it," Arthur said. "We dissolve it. We need to initiate a chemical flush."

He pointed to a control console on the far side of the bridge, near the sphere.

"If I can access the Admin Terminal with the Keycard, I can reroute the flow. I can inject acidic mana from the Alchemy Sector into this pipe. It will eat the slag."

"Acidic mana?" Vivian asked. "Is that safe?"

"It’s like drain cleaner," Arthur said. "It’s dangerous, but it clears the clog."

Arthur began to run toward the console.

"Wait!" Julian grabbed Arthur’s shoulder.

"What?"

"The tumor," Julian pointed. "It moved."

The black sludge on the pipe wasn’t just waste. It was alive.

As they watched, the mass shivered. It detached itself from the pipe with a wet, tearing sound. It dropped onto the bridge, blocking their path to the console.

It rose up. It didn’t have a face, but it formed pseudopods—thick tentacles of black tar that hissed and smoked. It was absorbing the ambient mana from the room, growing larger by the second.

[Threat Identified: Slag Elemental.] [Class: Waste Product Construct.] [Traits: High Physical Resistance. Acidic Touch.]

"It’s the immune system," Arthur realized. "The System thinks we are the virus. It created a guardian to protect the blockage."

"Ironic," Julian raised his rifle. "The blockage has a bodyguard."

"Arthur, get to the console!" Vivian shouted, stepping in front. "We’ll handle the trash!"

"Vivian, don’t let it touch you!" Arthur warned. "That sludge will melt your armor!"

Vivian didn’t charge. She stood her ground, switching from her hammer to her rapier. "Zack! Light it up!"

Zack cast [Flare]. A ball of light hovered over the creature.

The Slag Elemental lunged. A whip of black tar lashed out at Vivian.

She dodged left. The tar hit the metal railing. HISSS. The railing dissolved instantly.

"It’s acid!" Vivian screamed. "Julian! Shoot the core!"

Julian fired the Sun-Lance. ZAP.

The red beam hit the monster’s center. The sludge boiled and popped, but it didn’t stop. The hole simply closed up as the liquid body reformed.

"Physical attacks are useless!" Julian yelled. "It’s a liquid! You can’t shoot a puddle!"

"Freeze it!" Arthur shouted from halfway across the bridge. He was sprinting for the console. "Lower its viscosity! Make it solid!"

"I don’t know ice magic!" Julian panicked. "I’m a Fire Mage!"

"Zack!" Arthur yelled. "The Coolant Vent!"

Arthur pointed to a yellow pipe running along the floor of the bridge.

"The bridge has emergency cooling lines! Rupture the line!"

Zack looked at the pipe. He looked at the monster advancing on Vivian.

"I need a heavy object!" Zack cried.

Vivian heard him. She sheathed her rapier and grabbed her War Hammer.

"Move!" Vivian shouted.

She didn’t hit the monster. She swung the hammer down with all her strength onto the yellow pipe beneath the monster’s feet.

CLANG.

The pipe dented.

"Again!" Arthur screamed. He reached the console and slammed the Black Keycard into the slot.

The Slag Elemental raised a massive fist of tar above Vivian.

Vivian swung again.

CRACK-HISSSSSS!

The pipe ruptured.

A blast of super-cooled Frost-Gas (like liquid nitrogen) erupted from the floor. The gas hit the Slag Elemental from below at -200 degrees.

The effect was instant.

The black tar didn’t just freeze; it shattered. The monster turned grey, then white. It stopped moving, frozen mid-strike, transformed into a twisted sculpture of ice and toxic waste.

"Don’t touch it!" Arthur yelled, typing furiously at the terminal. "It’s brittle!"

Vivian scrambled back, gasping for air. The frozen fist was inches from her face.

....

Arthur’s fingers flew across the runic keyboard.

> ADMIN ACCESS: GRANTED.

> SYSTEM DIAGNOSTIC: SECTOR 7 OBSTRUCTION.

> INITIATING EMERGENCY FLUSH PROTOCOL.

"Warning," the automated voice of the facility boomed. "Flush Protocol requires manual override of safety limiters. Pressure may spike."

"Override!" Arthur yelled. "Do it!"

[Valve 7: OPENING.]

Above them, the massive pipe groaned. The metal shrieked.

Inside the pipe, a surge of green acidic mana rushed through. It hit the remaining blockage—the calcified slag inside the pipe.

The pipe vibrated violently. Dust fell from the ceiling.

"It’s gonna blow!" Zack covered his head.

GURGLE-THUNK-WHOOSH.

A sound like a massive drain unclogging echoed through the chamber. The bulge in the pipe vanished. The red warning lights on the conduit turned a steady, pulsing blue.

The flow was restored.

"Pressure dropping," Arthur read the screen, slumping against the console. "99%... 80%... 50%. Normalizing."

The frozen statue of the Slag Elemental cracked and crumbled into dust, its purpose gone.

Silence returned to the Core Room. Just the steady, rhythmic thrum of the pump.

"We did it," Julian whispered, lowering his rifle. "We fixed the plumbing."

"Not yet," Arthur said. He wasn’t smiling. He was looking at a new message on the screen.

> ALERT: EXTERNAL INTERFERENCE DETECTED.

> SECTOR 7 SURFACE (ARCH-MAGE TOWER).

> MANA SIPHON ACTIVE.

"What?" Vivian walked over. "What does that mean?"

"It means the blockage wasn’t an accident." Arthur’s face went pale. "Someone on the surface... someone in the Palace... is draining the system. They created the blockage to hoard the mana."

"Hoard it?" Julian asked. "Why?"

"To build a weapon," Arthur realized. "Or to become a god."

He looked at Julian.

"The Arch-Mage’s Tower," Arthur said slowly. "It sits directly on top of the main junction."

Julian dropped his rifle. It clattered on the metal grate.

"My father," Julian whispered. "He didn’t ignore the warnings. He caused them."

End of Chapter 47