At the school's annual Halloween dance everybody is dressed up in costume, including three psychopathic killers who have escaped from the local prison. They trap Emery and her friends inside the school with no way to escape. Emery and her friends have to find ways to survive while the threat of being found and killed hovers over them all. Every turn they take is a mystery, every step unpredictable. They have to hide. Have to run. Have to fight. Have to risk their lives in order to make it back outside the school alive. Who will be lucky and whose last day will be spent in the school? Read to find out who will survive.