A spiteful prank gone wrong leaves devastating consequences for Lorraine Mayfield and the group of girls responsible for her injuries. Frankie Hollingsway is sent down for the crime and abandoned by the group, but when a mysterious invitation is received by all involved some years later for an untimely reunion, the group find their way back to each other. Built up tensions, broken relationships, unveiled secrets and a few home truths ensue after years of being apart. But as the night moves on, the group discover that a deeper evil is keeping close watch on the group and plans to target them off one by one for the evil crimes they committed as teenagers on Lorraine. Their sweet school reunion quickly turns into a bloody massacre. Who is hunting whom and will they make it out alive.