As World War II draws to a close, the survivors of a torpedoed hospital ship find themselves stranded on a lifeboat, desperate for sustenance and shelter. Hope flickers when a ghostly German minesweeper appears, presenting a potential escape. Upon boarding the eerie vessel, the group discovers a chilling fate has befallen its crew. Their harrowing journey takes a turn when they meet a young Romanian girl, seemingly the last of her kind, who guides them to a mysterious locked room deep within the ship, hinting at dark secrets waiting to be uncovered.