After a bloody torrential rain, people with superpowers emerged across the world. The wealthy Warren Conglomerate built the Ark Laboratory, capturing powered individuals on a large scale to conduct brutal experiments on them. Ella, the daughter of ordinary father Frank, awakened an immortality ability. Kane, the ruler of the Ark, saw her as the perfect test subject and imprisoned her, planning to extract her eternal life power. To rescue his daughter, Frank took desperate risks. He injected dangerous shoddy genetic serum from the black market, scarred his own face, wore a black mask, and let himself get captured to sneak into the Ark, trapped inside this living human laboratory.