Scarlett Johnson

Aboard a small cruiser, a boating party of young Londoners loses its bearings. A freak accident leads to a casualty, and then the boat runs aground. As the friends attempt to find a way to safety, they are terrorized by a group of young punks and a murderous hooded man. Alone in a vast waterway, they fight to survive the hellish curse that traps all who take passage on the cruiser.