A team of special operatives, known as the H.U.N.T. (High-risk United Nations Task-force), is sent to San Nicolas Island to investigate deadly cult activity taking place in an ancient monastery. Their boat, the only way back, is destroyed by patrols, and the team soon learns that the cult plans to systematically destroy nearby Los Angeles. The operatives, now unable to return whence they came, are then left to fight their way into the monastery on the island, and eventually put a stop to the cult's activities.