A killer wearing a gas mask stalks and murders a group of thieving friends at a birthday party. Seeking an escape from the tragedy, and to lie low while the police do their job, Melissa and her remaining friends head to the countryside where an even more sinister plot unfolds.

After discovering a passenger ship missing since 1962 floating adrift on the Bering Sea, salvagers claim the vessel as their own. Once they begin towing the ghost ship towards harbor, a series of bizarre occurrences happen and the group becomes trapped inside the ship, which they soon learn is inhabited by a demonic creature.