Synopsis: A highly decorated, retired U.S. Marine general seizes a stockpile of chemical weapons and takes over Alcatraz, with 81 tourists as hostages on the San Francisco Bay Isle. His demand: Restitution to families of soldiers who died in covert operations. The response: An elite Navy SEAL team, with support from an FBI chemical warfare expert and a former Alcatraz escapee, is assembled to penetrate the terrorists' defenses on the island and neutralize the threat before time runs out.