Totsuko is a high school student who can see the “colors” of others. The colors of bliss, excitement, and serenity, as well as her favorite color. Kimi, a classmate at her school, radiates the most beautiful color of all. Although she doesn’t play any instruments, Totsuko forms a band with Kimi and Rui, a quiet music lover she meets at a second-hand bookstore in a remote corner of town. While rehearsing in an old church on a remote island, music brings them together, forming friendships and awakening attachments. Will they reveal their true “colors”?