Procella's You Hazuki and Gravi's Koi Kisaragi are asked to appear as guests at the high school student dance contest "High School Dance Colosseum (AKA DanColo)." The two of them are selected to form a special group with Tsubasa Okui of SolidS, Kensuke Yaegashi of Growth, and Ruka Nazumi of ROCK DOWN, and You is appointed team leader.