In the ruined Chernobyl Nuclear Station, after a mysterious explosion in the core of the Chernobyl Ruins, a scavenger team known as Unit Kappa-7 infiltrates the Core. The guards and scavengers enter a restricted area beneath the complex: The guards and survivors fight toward the core. The creatures seem drawn to the Quantum Pulse Device, the source of their mutations. They must destroy it, but it's guarded by a massive entity: The Chromophage, a towering mutant, with multiple faces frozen in pain. The Chromophage feeds on light and emits disruptive sound waves descends from theceiling like a spider. It can phase through walls in short bursts. Blinding pulses of light. The entire room is warping from radiation. In a climactic battle, the guards use a pulse disruptor to overload the Chromophage's internal structure. One soldier sacrifices himself to detonate the core manually. The creature shrieks, folding in on itself in a burst of anti-light. The entire chamber collapses.