"You need to kill at least three people, right? So that's what I'll do." When Will jokes about becoming a serial killer, his friends just laugh it off. But Adeline can't help but feel there's something more sinister lurking behind his words. Fifteen years later, Adeline returns to Blythe for a reunion of the old gang -- except Will doesn't show up. Reminiscing about old times, they look up the details of his supposed murder spree. But the mood soon changes when they discover two recent deaths that match. As the group attempts to track Will down, they realise that he is playing a sinister game that harks back to one they used to play as kids. Only this time there are lives at stake...