The plot of "Ghost Ship" is straightforward yet effective. A group of college students, led by Alex (Alex Draper), stumble upon the abandoned cargo ship while on a boat trip. As they explore the ship, they begin to uncover disturbing signs of recent habitation, including strange symbols etched into the walls and a mysterious sound that seems to emanate from the ship's hold. As the group delves deeper into the ship, they realize that they are not alone, and that the ship holds a dark and terrifying secret.