Spring has come, and more than six months have gone by since Ave Mujica made its return. The band keeps drawing a bigger audience, and each member is building momentum in her own separate pursuits as well. Sakiko Togawa, who vowed to become a god, puts forward the group's next stage: a masquerade ball open only to members. The question hanging over the film is what she truly intends by it. A music drama continuing the BanG Dream! Ave Mujica story on the big screen.