Totsuko is a high school student with the ability to see the “colors” of others. Colors of happiness, excitement, and tranquility, plus one color she cherishes as her favorite. Kimmy, a classmate at her school, radiates the most beautiful color of all. Despite not playing an instrument, Totsuko forms a band with Kimi and Rui, quiet music enthusiasts who meet at a used book store in a far-off corner of town. As they practice in an old church on a remote island, music brings them together, creating friendships and bonding. Will they discover their true “colors”?