During their summer vacation, siblings Okju and Dongju find their small family moving in with their grandpa after their father has gone broke. While young Dongju well adapts to his new home, Okju rather feels awkward about this new environment. Soon after, their soon-to-be-divorced aunt also moves in. As Okju spends time with her family, the house and her grandpa start to grow on her. However, when her grandpa gets sick, father and aunt decide to send him to the sanatorium and sell the house.