A girl falls into a world that exists only in piano music, and the film never explains why that works because it doesn't need to. Every scene is built around what the soundtrack demands, not the other way around. The story is almost incidental; what matters is that moment when you stop watching and start listening, when the image becomes secondary to the sound reaching for something you can't name. It's a 90-minute music video that knows exactly what it is.

A little girl falls from the sky into a treehouse world, remembering nothing of who she is or where she came from. There she meets Deemo, a mysterious figure who plays the piano all alone in a castle. Whenever Deemo plays, a sacred tree grows taller on top of the piano, and Deemo hopes this can help the girl find her way back to her own world. The castle is home to other strange inhabitants, and as Deemo grows used to a companionship it has never known, the girl's lost memories begin to return. This film adaptation of a Rayark rhythm game tells a gentle, music-centered story about a chance meeting and the goodbyes that may follow.