Rinku Aimoto, who has a habit of saying "Happy Around!", has moved back to Japan from abroad, where she transfers to Yoba Academy where DJing is popular. She is deeply moved by a DJ concert she sees there, and decides to form a unit of her own with Maho Akashi, Muni Ohnaruto and Rei Togetsu. While interacting with other DJ units like Peaky P-key and Photon Maiden, Rinku and her friends aim for the high stage!
