This movie commemorating the 50th anniversary of Chukyo TV is based on the origin story of the marching band club of Komaki Technical High School in Komaki City, Aichi Prefecture.
One summer day, Tokiko (Kinoshita Misaki), whose life in Tokyo is going nowhere fast, gets on an overnight bus to the countryside. When she arrives, she meets Yohei (Izumisawa Yuki), a high school student struggling to deal with the sudden death of a young man who was like a big brother to him.
Kuroshi Mayama, age 14, lives alone with his mother Namiko. Though he was just under the age of one when he came to this town with his mom, he remembers everything from that day: Gettings on the bus in his mom's arms, an old woman who spoke some words to him, and the encounter with a poet... One night, with Kuroshi's birthday approaching, Father shows up unexpectedly. He insists that he and Kuroshi's mother had made an arrangement – that Kuroshi was to live with his mother until his 15th birthday and then live with his father. As Kuroshi's world gets turned upside down, his family, the people around him and even himself start to change.