Youngseo tries to find his missing son, but he cannot find him. Youngseo tells Eunhoo that the boy was supposed to return home at 5:00 p.m., but didn't arrive. Eunhoo tells Youngseo that they have to report the incident to the police, but Youngseo says it's just been an hour since they last saw him. He asks Eunhoo if he has ever reported a missing child, and Eunhoo says he does. He says that the son of his friend, who lives in a nearby office building, has gone missing. He's named Yeoun, and he's been sent to another school by the school's security office. Yeoun thanks Eunhoo for bringing him to his house, and Yeoun says that his dad heard the security announcement, so it was a coincidence that Yeoun's friend's dad heard about it. He tells Yeoun to go inside first, and then he'll come back out and say hi to him.