Synopsis: During World War II, a U.S. submarine under the command of Capt. Emmett Carey takes on the underwater demolition team of Lt. Morgan Hayes -- which includes Seaman Joseph Malzone -- when the radar equipment of a sunken ship needs to be destroyed. Reaching their target at Bikini Atoll, they find the area full of hostile enemies and helpful guerrillas, including the stunning Reiko, with whom Hayes develops a relationship during the mission.