Students and best friends Mizore Yoroizuka and Nozomi Kasaki prepare to play a complex musical duet, “Liz and the Blue Bird”, for oboe and flute.

Though they became teammates in their middle school brass band and have played beautifully together ever since, Mizore and Nozomi find that with graduation from high school looming and the duet proving difficult, their friendship begins to buckle under the pressure. Interspersed with the story is the fantasy tale of Liz, drawn like a storybook, contrasting with the crisp realism of the school. These two distinct styles weave with stirring music to tell a touching coming-of-age story.