Mizore Yoroizuka and Nozomi Kasaki are two close friends who are part of the Kitauji High School music club. Quiet and reserved Yoroizuka plays the oboe while lively and popular Kasaki plays the flute. The group has decided to play Liz and the Blue Bird, a song inspired on a fairy tale about the relationship between a girl and a bird. The musical piece puts both Mizore and Nozomi on the spotlight due to a solo part by Yoroizuka and forces the two girls to reexamine their friendship.

The story begins the day before the graduation ceremony. Five middle school girls each are preoccupied with their real everyday lives. These girls meet each other in a fantasy world after being sent there through a sudden occurrence. There, they learn about the impending crisis that this world is facing. The way to avert this crisis is for the five to collaborate and bring their five hearts together as one through dance. However, the five cannot come to love the world, and cannot tell their true feelings to one another, so their hearts are unable to unite. The time limit is fast approaching. Can the dance of the five girls save the world? And will they be able to graduate?