Chizuru (Anne Watanabe) is the new teacher at Umega High School. Since her school days, she has played violin in an orchestra. One day, she listens to an amateur orchestra play at the local cultural hall. She is touched by their performance and decides to enroll in the orchestra, but there are 2 orchestras in town. Chizuru mistakenly enrolls in the orchestra which consists of elderly people. The members there are thrilled to have a young person join their group. Chizuru is unable to tell them she made a mistake and becomes the conductor for their orchestra.

Mizuki's husband (Yusuke) drowned at sea three years ago. When he suddenly comes back home, she is not that surprised. Instead, Mizuki is wondering what took him so long. She agrees to let Yusuke take her on a journey.