A German U-boat stalks the frigid waters of the North Atlantic as its young crew experience the sheer terror and claustrophobic life of a submariner in World War II.
Communist radicals hijack Air Force One with the U.S. President and his family on board. The Vice President negotiates from Washington D.C., while the President, a veteran, fights to rescue the hostages on board.
On New Year's Eve, the luxury ocean liner Poseidon capsizes after being swamped by a rogue wave. The survivors are left to fight for their lives as they attempt to escape the sinking ship.