Led by naval officer Keyvan Mohtasham, a group of divers discovers an Iraqi station tracking Iranian ships in the Persian Gulf but fails to destroy it. Injured during the mission, Mohtasham later appears to leave the navy and joins international broker Kamran Sepehr, who manipulates him into cooperating with Iraqi forces. After discovering Sepehr’s deception, Mohtasham secretly works with the Iranian navy, helps disarm the Iraqis, and destroys the tracking station. He ultimately defeats Sepehr at sea and escapes by helicopter.