Eighteen elite students were chosen by Hope's Peak Academy. What they expect about the school's prestigious name is not what they encounter. They are trapped in the school for the rest of their lives and in order to escape the dreadful life, one has to graduate. But graduating is too complicated since you have to kill one of the students without others knowing it. If one fails to keep it, he/she dies. However, if they fail to choose the real killer, the innocent ones will die. Who will survive the death game?