Du Ru Mi, a struggling violinist by night working for the mayor by day, is put in charge of setting up a city orchestra. When she is scammed out of the startup funds, she tries to hide it by recruiting any and all volunteers, leading to a rag-tag group of members with varying levels of experience. To lead them, she convinces an esteemed conductor, the infamous Kang Gun Woo, into helping out. Amidst rivalry between members, including Ru Mi's musical prodigy neighbor who works as an officer, also named Kang Gun Woo, and recurring political issues, the group tries to follow their orchestral dreams, and eventually realizes how friends can become like family.