A group of 15 elite high school students is going to a very special high-class high school. The end of this high school, in fact, means that you will achieve success in life, but the end is very difficult. The school is headed by the Bear named Monokuma, and explains to them that his graduation revolves around the murder. The only way to finish school-kill one of your peers and get away from hand. If other comrades recognize the person of the killer, the murderer is the only executed. However, if they can't catch the killer, only the killer graduates from school, and the rest will be destroyed. Which of the 15 will survive the impending bloody bath?