Bruce infiltrates Alcatraz which has been secretly occupied by the Leader and his private army. Bruce deactivates the Gamma detection device using a security terminal which shows live footage of a Gamma chamber used to mutate the Leader's henchmen into Gamma-irradiated super soldiers. It also shows the Leader's psychotic brother Madman taking the hostage Betty Ross to the irradiation chamber after being ordered by a mysterious voice to "dispose" of her when she refuses to further aid them in their schemes. Seeing Betty in distress causes Bruce to transform into the Hulk decimating the research facilities and defeating Madman after disabling the irradiation chamber. Betty tells the Hulk that she has been exposed to the Gamma radiation and must be taken to the military Gamma base. The Hulk takes Betty to the base, but is incapacitated by a force field. Bruce is sedated and strapped to an operating table where General Ryker plans on dissecting him. Betty frees Bruce, who (disguised as a soldier) formulates an antidote, transforming into the Hulk and fighting the military while trying to find and destroy the shield generator. Hulk finds the generator, but is confronted by Flux, a Hulk-like soldier. The Hulk defeats Flux and throws him into the generator, destroying it.