The air in the corridor didn't just get warmer; it grew heavy, shimmering with a haze of extreme heat. The stone beneath their boots began to glow a dull, angry red. Jessica’s silver hair floated slightly as the ambient mana began to vibrate at a high frequency.
"The room ahead isn't a hallway," Jessica noted, her eyes narrowing as she analyzed the shimmering air. "It’s a Heat Sink. The dungeon is drawing energy from the earth's core and venting it here. If we step in without a plan, our armor will fuse to our skin in sixty seconds."
Merek wiped sweat from his brow with the back of his hand, his playful demeanor finally suppressed by the sheer oppressive weight of the heat. "Sixty seconds? I can sprint across a hall in five."
"Not this hall," Jessica said, pointing to the ceiling. "Look at the vents. The moment we cross the threshold, the oxygen will be purged and replaced with pressurized flame. It’s a closed-circuit trap."
Marin adjusted her shield, the leather straps of her gauntlets creaking. "What’s the play, Jessica? I can’t block heat with a shield."
"I can create a Cold-Zone Bubble," Jessica said, her hands already beginning to trace a complex, spherical geometric pattern in the air. "But it requires a massive amount of processing power. I’ll be completely blind to physical attacks while I maintain the thermal equilibrium. I need you two to be my eyes and hands."
Merek stepped forward, his sword held low. "You keep us from roasting, we keep the monsters off your back. Deal."
As they stepped into the chamber, a roar of fire erupted from the walls. Jessica’s magic flared, a shimmering sphere of frost-blue energy expanding to encase the trio. Outside the bubble, the world was a blurred nightmare of orange and white heat; inside, the air was crisp and biting.
Jessica’s eyes went vacant, glowing with a brilliant silver light. Her mind was currently balancing a thousand variables: pressure, temperature, mana-flow, and oxygen levels. She was the only thing keeping them alive in a furnace.
"Something’s coming," Marin warned, her voice tight.
From the molten vents at the far end of the hall, Magma Constructs began to pull themselves out. They were jagged, faceless giants of semi-liquid stone, their every footstep melting the floor.
"Jessica can't move fast while holding the bubble," Marin shouted over the roar of the flames. "Merek! Intercept the one on the left! I’ll take the right!"
Merek charged. The heat outside the bubble was so intense that even a second’s exposure felt like standing in a forge, but he ducked out, swung his blade into the "soft" joints of the magma giant, and dove back into the blue safety of Jessica’s shield before his cloak could catch fire.
"It's like fighting a volcano!" Merek barked, his lungs burning.
Jessica’s voice came out in a monotone, her consciousness tethered to the spell. "Three meters... forward... Step... now."
She moved like a sleepwalker, her feet finding the exact rhythm needed to keep the bubble stable.
A construct swung a massive, molten fist down toward the top of the bubble. Marin braced herself, holding her shield above her head. When the fist hit, the frost-shield hissed violently, steam filling the interior. Marin gritted her teeth, her muscles bulging as she held back the weight of a ton of living stone.
"Keep... going!" Marin hissed through clenched teeth.
Merek saw an opening. He didn't just swing; he used the "Mark" timing Jessica had taught him in the previous room. He waited for the construct to overextend, then lunged out of the bubble, driving his sword into the creature's core. The magma construct exploded into harmless, cooling rock.
"Almost there," Jessica whispered, her silver eyes flickering.
With one final, agonizingly slow push, they reached the cooling vents on the other side. As they crossed the exit threshold, the blue bubble shattered, and Jessica collapsed.
Merek caught her before she hit the stone, his arms steady. Her skin was cold to the touch, a sharp contrast to the blistering heat of the room they had just left. She looked up at him, her focus slowly returning.
"Did... did the thermal seal hold?" she asked, her voice a tired rasp.
Merek looked back at the room—a swirling vortex of fire that would have killed them in heartbeats. He looked down at the girl in his arms, the "Genius" who had just performed a miracle of logic.
"It held," Merek said, his voice unusually soft. "You held us together, Jessica."
Marin stood over them, her armor scorched and her shield blackened, but she was smiling. "The first member of the family to be saved by Jessica Smith. Welcome to the club, brother."
Merek didn't argue. He just helped Jessica to her feet, his hand lingering on her shoulder a moment longer than necessary.
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