Koichi Hikuma (Akira Terao) was a saxophone player, but he suffers from the aftereffects of an accident. Due to that, he turned his back on music. Koichi Hikuma finds hope in the high school brand band. The band consists of problem students. Koichi struggles to instruct the brass band and to give them hope.
Misaki Sakurai (Mirei Kiritani) has not dated in a long time. She has focused on her work as a pâtissier to eventually run her own business. One day, she gets fired from work. She then meets her first love from high school Chiaki Shibasaki (Shohei Miura). Misaki Sakurai works part-time at Chiaki’s restaurant and also stays there. While she lives with Chiaki at his restaurant, she realizes that Chiaki's two younger brothers Toma (Shuhei Nomura) and Kanata (Kento Yamazaki) also live there.
Shinichi Todo (Tatsuya Fujiwara) is handsome and smart. He is loved by family, friends and his girlfriend. Everything in his life seems to go well, but, one day, someone with the same name is arrested. After that, his life smooth life changes. An imposter takes his life.
Yuiko Yoshioka (Mei Nagano) begins the first grade in high school. She gets sick with the cold and stays in bed. At that time, she gets a phone call from class president Matsubara. Yuiko becomes fluttered by his kind voice on the phone. The next day, she goes to school and meets Matsubara. He is a mysterious boy, wearing a paper bag over his head. Her high school days begin with pounding heart.