Asakura, a high school student at the bottom of the school caste, was appointed as a member of the school festival executive committee. He plans to go out with Ito Mayumi, a beautiful girl who ranks high in the caste, with the aim of collapsing the caste. The caste collapse plan seemed to be going well, but in the wake of a certain incident, it went in a surprising direction ..!?? The tragicomedy of a strange class collapse begins.