In this suspenseful actioner, former Navy SEAL James Carter (Michael Dudikoff) is called back to duty when terrorists high-jack an American submarine armed with nuclear weapons and threaten to blow up the U.S. if their demand for $100 million in gold is not met. The deadly situation arose when the sub, USS Ulysses answered a distress call from Yugoslavian refugees stranded in the Atlantic during a terrible storm. Once aboard, the rescued sailors turn out to be highly trained Middle Eastern terrorists. Carter's mission is to somehow secretly board the sub, sabotage it and subdue the hijackers. If he should fail, the Ulysses will be destroyed by another Navy sub.