Seven-year-old Sang Woo is left with his grandmother in a remote village while his mother looks for work. Born and raised in the city, Sang Woo quickly comes into conflict with his old-fashioned grandmother and his new rural surroundings. Disrespectful and selfish, Sang Woo lashes out in anger, perceiving that he has been abandoned. He trades his grandmother's only treasure for a video game; he throws his food and he throws tantrums. When Sang Woo's mother finds work and finally returns for him, Sang Woo has become a different boy. Through his grandmother's boundless patience and devotion, he learns to embrace empathy, humility, and the importance of family.