Since childhood, Akito Nagakura has been the ears and voice of his mother, Reiko. Reiko, who was born deaf, dreams he will be a professional pianist. But Akito doubts his musical talent and his mother’s expectations are onerous. One day, Akito meets Izumi, a deaf girl in a street band. He is attracted to her positive nature but Reiko disapproves, fearing Izumi will hinder his success in a hearing world. Akito begins to question his mother’s attitude toward both their lives. This heartwarming tale conveys the love of a tight-knit mother and son, and their struggle to grow independently.