The story of Aqours begins! In the small town of Nishi-Izu, known for its beautiful sea, lies the traditional school "Uranohoshi Girls' High School." Here, the school idol activities started modestly with Chika Takami and Kanana Matsuura. However, everything changes dramatically when they have a fateful encounter with Riko Sakurauchi, a transfer student from Tokyo. Chika works hard to try to recruit Riko as a member, but...