This film tells the love story of the protagonist, Tsumugi Aoba (Haruna Kawaguchi) and Sakura So (Ren Meguro), who lived in a silent world due to illness at the age of 18, and their reunion. In her second year of high school, Tsumugi Aoba was attracted by the voice of Sakura So who was reading a composition at the morning assembly. The two became classmates in their third year of high school and got closer through friends and deepened their relationship because of their common interest in music, but after graduation, Sakura So left without saying goodbye. One day 8 years later, Tsumugi, who was working hard in Tokyo, suddenly saw Sakura So again in the crowd. After finally finding him, she learned that Sakura So had "juvenile-onset bilateral sensorineural deafness", a disease that gradually loses hearing, and at this time, he can hardly hear anything...