Chang-woo, a senior at a vocational high school, wants to be recognized by his mother as a good son. He starts field training at a subcontractor for a large company, hoping to solve the problems of getting into college or finding decent employment. While learning about work and human relations from his senior workers, Chang-woo finds himself siding with the non-contract staff, and fails to get into college, secure a job, or deal with the problem of his military service. However, Chang-woo eventually finds a job that he likes and develops a sense of pride in his work. He moves out of his mother’s home in search of a new life.

One summer night, Jeong-ho's younger brother, Jeong-gi, suddenly comes and asks him to scrap the car. On the way to the junkyard, Jeong-ho almost hits a deer that suddenly appeared. Then, a familiar thump comes from the trunk.