Yearning for the company of adorable girls in charming attire, Eruna Ichinomiya enrolls at Mikagura High School, renowned for its delightful uniforms and diverse cultural clubs. Unaware of the mandatory club participation and competitive club rankings determining members' accommodations and meals, Eruna is drawn to the elegant Seisa Mikagura and joins the going-home club. Unexpectedly thrust into inter-club battles where each member possesses distinct powers, Eruna faces intense competition. Adapted from a beloved song series, Mikagura Gakuen Kumikyoku trails Eruna as she delves into the school's eclectic clubs, aiding their members in their personal struggles while aiming for supremacy within the school hierarchy.