Yukina's obsession isn't about being the best, it's about building something that matters more than winning. The movie trusts you to feel what these five girls are building together, even when it moves at a crawl. It's a love letter to everyone who's watched Roselia grow from a text-based promise in the game into flesh and blood on stage, which means it only truly lands if you've already made that journey yourself.

Yukina Minato wants to reach the stage of FUTURE WORLD FES., and to get there she decides to form a band. Four other girls join her, each with convictions of her own, and together the five become Roselia. The film covers the group from its formation through its bid for FUTURE WORLD FES., built around the promise the members make to one another as they start aiming for the top. The story is a music-focused film centered on the band Roselia.