Plot
Director Jo Min-hyeok (Baek Yoon-sik), a meek man, has worked faithfully for his company, and there are 30 days left before his retirement. Because of his lack of adaptability, he was often passed over for a promotion, and some of his junior coworkers were promoted ahead of him. He has persisted in his job with a single-minded determination to support his wife and children. Now there is one dream he has not yet realized - being a drummer! Then he discovers that director Kim, who will retire two months later than he, is good at playing the saxophone, that Choi Seok-won (Lim Ha-ryong), the guard who greets him every morning, has a wonderful ability to play the guitar, and that section chief Park (Park Jun-gyu), his junior coworker as well as his close companion who is an excessively optimistic person, has the makings of being a good vocalist... As they are well matched, they begin to secretly dream of a pleasant rebellion...
