Mitsu Hachinomiya, the daughter of the infamous Hachinomiya family, was banished from her prestigious school and transferred to Ohanabatake High School, where her grandmother's family attended, in order to start her youth over in a place where no one knows her. However, it is a place of delinquents, and the most dangerous-looking boy named Sumire Kitamura, who saved Mitsu from getting into trouble as early as the transfer, comes on to her and says, “I'm your maid”!