After her mother's recent divorce, Souka and her family decided to start fresh in a new place. As Souka searched for a school to attend, she made a bold decision to leave her preppy, private high school and enroll in a technical high school. However, the first day proved to be unlike anything she had ever imagined. The school was entirely male-dominated and chaos ensued, with boys recklessly brawling and disrupting the class.
Things took a dangerous turn when the class "Bancho" targeted Souka in an ambush. But Yu, one of her classmates, valiantly stepped in to rescue her, only to end up in a scuffle himself. In an attempt to help, Souka grabbed her book bag and surprisingly took down the Bancho. Little did she know that this made her the new leader of the class, a title she had not set out to obtain.
Despite her reluctance to accept this role, Souka now finds herself having to navigate and lead a class full of rowdy young men.