WARNING︰THIS ARTICLE CONTAINS MATERIAL WHICH MAY OFFEND AND MAY NOT BE DISTRIBUTED , CIRCULATED , SOLD, HIRED , GIVEN , LENT , SHOWN , PLAYED OR PROJECTED TO A PERSON UNDER THE AGE OF 18 YEARS.
Yuga Ota (Kanata Hongo) used to spend his boring days as a part-time worker. One day, he forcibly drags his twin sister Eia Arakawa (Sayaka Akimoto) into a game. "SCM" (Slave Control Method) is a big battle royale game with excitement, pleasure, revenge and craze. The players wear a mouthpiece shaped equipment and they can make their opponent a slave by winning a duel. Rules are simple, winners are "masters" and losers are "slaves". The duel can be anything. The two faces crazy opponents, high school student, teachers, film director, elementary kid, and gradually they discover the truth of the "SCM". Who will win this survival slave game and what will happen to Yuga and Eia?