The film focuses on Baek Yeo-min (Kim Seok (equestrian)), a thoughtful and mature nine-year-old boy living in 1970s Korea. Trying to help his one-eyed mother after noticing a pair of expensive glasses in a store, Yeo-min decides to make his own money by getting a job as an ice-cream boy, selling ice cream and doing chores until his mother notices the money he made and punishes Yeo-min, saying that he shouldn't have made money from his summer jobs.