A group of renegade soldiers steals a chemical weapon and takes over the old Alcatraz prison with 81 tourists as hostages. Their leader, a highly decorated army general, demands $100 million to give to the families of soldiers killed in covert operations carried out by the army. An elite team and an inmate who once managed to escape from Alcatraz, and who knows the passageways that run throughout the prison, will try to prevent a great catastrophe from taking place.