In a dark, secluded wood, the lovely Ilsa gasps for breath. She's behind a rotting shack, hiding from a murderer...until his shadow passes over her. Ilsa lunges at him, screaming! But the killer dodges, whacks her with the shovel. Ilsa falls to the forest floor, and looks up to see the killer's face:
ILSA: "You?! But that's impossible!"
THE KILLER: "No it's not. I win."
He brings the shovel down to bash her head in, but just before it makes contact we cut to black, with the caption TWELVE HOURS EARLIER. Let the mystery begin: who is the killer in the woods? Twelve hours before, Ilsa parties her ass of at a friend's cabin nearby. She, and eight of her friends, are here to celebrate their high school graduation. Although years of tension obviously exist between them, they manage to flirt, philander, and have one final good time. Once the party dies down, they decide to play Dead Body, a hide-and-seek/murder-mystery game. The game is going well until they discover that one player has actually murdered three of their friends. But who? Paranoia breaks loose, accusations fly, secrets come out. They turn against each other, form brittle alliances, all to survive. All the while, the killer is still among them, gruesomely murdering them one by one. A girl is stabbed repeatedly in the head, another is shot through the face with a nail gun. One victim takes a hook through the eye and is dragged through the forest. Another is strangled. Finally, only two players remain for an epic final showdown where the killer is revealed!