There is a passionate fan who dedicates their life to supporting the shy and least popular member, Maiina, of the underground idol group ChamJam, which is active in Okayama Prefecture. Their income goes to supporting their favorite, so they wear a red tracksuit from their high school days. They love her so much that they get nosebleeds during live performances... the legendary woman, Eripiyo! Until the day Maiina stands on the Budokan stage... Eripiyo's all-out idol activities will continue!!!