After relocating to Kamakura, Maiharu Hiromi embarks on a new chapter at Minami Kamakura High School. In a rusty return to cycling, she narrowly avoids a collision with Akizuki Tomoe on her first day. Recognizing Hiromi's need for practice, Tomoe steps in to mentor her, sparking a deep friendship. Their journey unfolds as they unearth the school's forgotten bicycle club history, leading to the revival of the Minami Kamakura High School Girls Bicycle Club alongside Kamikura Fuyune and Higa Natsumi.