Every camper’s worst nightmare came true at Lake Bodom in 1960 when four teenagers were stabbed to death while sleeping in their tent. As the years passed and the case grew cold, the unsolved mystery turned into an urban legend, a creepy campfire story passed from generation to generation. The murder still walks free and now a group of teenagers arrives at the same campsite, hoping to solve the murder by reconstructing it minute by minute. As night falls, dark and bloody truths come to light – and a real slashing begins.