Sket Dance follows the adventures of the Sket-Dan Kaimei Gakuen, a club dedicated to solve any problems arising from the student body for the general improvement of life in high school.
Its members are: Himeko, a former criminal with a weakness for cute things and a taste for strange foods, Switch, an intelligent otaku who only speaks through the voice software for Bossun, the a typical leader of this group of lunatics, with the incredible power of concentrating very hard.