Nobuko (Sayuri Yoshinaga) works in Nagasaki, Japan as a midwife. Her son died 3 years earlier from the atomic bomb. On August 9, 1948, her son appears in front of her again. Since that time, Koji (Kazunari Ninomiya) appears in front of her and they reminiscence about pleasant times. These happy, but bizarre moments seem eternal.
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.