Near the end of the Cold War, a sunken submarine off the coast of the country of Lasria releases a mysterious and horrifying infection known as the Technocyte, which spreads mutation and destruction before the Lasrians manage to bring it under control. Years later, covert operative Hayden Tenno is sent deep into a grim Lasrian gulag compound where the ruthless Robert Mezner is holding those infected with the virus. Hayden's orders are clear: locate his target, halt the spread of the Technocyte, and eliminate Mezner. But the mission goes catastrophically wrong. Hayden is confronted, overpowered, and deliberately infected with the very virus he came to contain. As the Technocyte takes hold and transforms his right arm into a monstrous weapon, Hayden must fight for survival while grappling with the dark power growing inside him.