After returning to Japan following living aboard with her parents since kid. The freshman high school student, Rinku Aimoto enrolled Yoba girls academy. After she saw Yoba's famous DJ unit "Peaky P Key" perfomances. Rinku develop interest in DJ and meet Maho Akashi who also a DJ as school's broadcaster. Together, they formed DJ unit called "Happy Around" in order show their music. It will soon joined by Muni Arimoto, a talented illustrator and Rei Togetsu, a young lady who wanted free from her parent's strict expectations.