On Children's Day, the nominated family plans an outdoor picnic. Excited underdogs try to go fast, but the car sent by the car rental company does not arrive quickly and waits a few hours. Yeong-gyu has an upset stomach when he picked up Gisumju Island Gimbap to soothe a boring time. Finally departed. However, the road is blocked and cannot be misled, and Young Kyu, who insisted on going by train, continues to nag. Meanwhile, Chan-woo, who decides to take an aquarium tour with Ui-chan, heads to the hospital when she is urgently contacted by the hospital. When Chan-woo, who promises to come in two hours, does not come, Ui-chan becomes depressed and heals the hunger with bread and milk. (Source: SBS)