23 people participate in a game of psychological warfare in which they wear a special device called “SCM” which can be used to turn other players into their slaves. Eia Arakawa is a girl with a cold personality who dabbles in various romances without taking anything too seriously.
Shun Takahata (Sota Fukushi) is an ordinary high school student leading a boring life. His life long friend is Ichika Akimoto (Hirona Yamazaki).
One day, a teacher’s head explodes in class. Shun Takahata and his classmates are forced to play a game of death without knowing who, why or how.