Megalodon

Low-budget American action drama starring Michael Madsen as the admiral of a US submarine. While on a mission to retrieve a mysterious vessel Admiral King (Madsen) and his crew find that a rival Russian submarine has reached their objective before them. When the Russians insist that they have come under attack from a giant shark and are seeking safety, King and his crew fail to believe them until they see the creature for themselves.

Will both sides be able to put their rivalry aside and defeat the giant shark?