What are the bonds that form a real band?

As the contest to perform at Future World Fes draws near, pressure mounts from all sides for the members of Roselia — the rigorous practice they need to do every day to stay sharp, family tensions running high, and on top of everything else, a shocking development for Yukina.

When a professional record label approaches her to sign a solo deal, Yukina finds herself facing an impossibly heavy choice. Should she take the shortest path to achieving her dreams, even if it means leaving her band members in the dust? Or should she risk it all, staking her future on the ragtag group of amateur musicians she might actually be willing to call her friends?