Unbeknown to the passengers on board a cruise ship in the Caribbean, a mysterious vessel is approaching - on a collision course! Despite the attempts of the crew to avert disaster, the liner is lost with all hands down, except for seven survivors. They are saved when they clamber aboard a ghostly freighter, where they discover an even worse fate. They are now prisoners on a former wartime vessel. As this ship speeds towards an unknown destination, they realise that something is intent on destroying each one of them in a gruesome and terrifying way... It's not a ship, it's a killing machine!