High-schooler Subaru Hasegawa is left without basketball when his school's team is suspended for a year. His aunt pushes him to coach the girls' team at Keishin Academy's elementary division, where he takes charge of Tomoka Minato, Maho Misawa, Airi Kashii, Hinata Hakamada, and Saki Nagatsuka. What starts as a three-day favor turns into a real coaching job as the five girls chase their first wins together.