years ago during the cold war, the u.s. military made a new superhuman formula called formula x but the project for its use failed. the bunker for the experiments was shut down and abandoned. in 1991, seven years before the curien mansion incident, ams special agent g is given his first assignment and sent to a small town in louisiana to investigate a series of disappearances and hunt down a deranged crime boss, papa caesar. due to the presence of mutants, g is forced to team up with police detective isaac washington who is out to avenge his father's murder, which caesar masterminded.