Kubota Sato (Kitamura Takumi) is an introverted boy. He is not good at socializing and naturally has no friends. He has always lived a lonely life. By chance, Sato picked up a tape. The owner of the tape was Miyata (Nitta Mackenyu), the lead singer of the band who had passed away a year ago. As Sato quietly listened to the tape, a magical thing happened. Sato discovered that Miyata could share a body with him through music, and the time limit was 30 minutes of music playing. Taking advantage of this opportunity, Miyata decided to complete his regret before his death-rebuilding the band ECHOLL that was once forced to disband. In the process, Sato was gradually changed by Miyata's cheerful personality and became more cheerful day by day. Miyata hopes to attract his former lover Murase (Kubota Sayo) to rejoin the band through the music he composed, and Sato finds that he can't help but have a good impression of Murase.