Totsuko is a high school student who has the ability to see the “colors” of others. The colors of joy, excitement, and serenity, as well as one color she cherishes as her favorite. Kimi, a classmate at her school, exudes the most beautiful color of all. Although she doesn’t play an instrument, Totsuko forms a band with Kimi and Rui, a quiet music lover they meet at a used bookstore in a remote part of town. As they practice in an old church on a remote island, music brings them together, forming friendships and sparking affections. Will they discover their true “colors”?