Seven people who committed the seven deadly sins : lust, gluttony, greed, sloth, wrath, envy and pride are locked up in a sealed space by someone. These seven people must play a game which is a matter of life or death.
Seiji Hasumi is a popular English teacher in a private high school. He is also a violent and sociopathic killer who concocts an extreme plan to deal with the rise of bullying and bad behavior among the student body.
