Yon-woo and his mother are in the middle of a conversation about how their son is upset because he has been hurt by the dog. They are interrupted by the sound of the dog's whistle, which makes the mother cry. She tells her son that he should thank the dog for being so kind to him, and she also tells him to thank her friend, who is also a dog lover. The mother says that she is glad that she has been able to take care of her younger siblings while she is working at the school, and that she will be able to meet them whenever she is free. She says that the director of the school talked about her a lot, and the director seems to have spoken too much about her because she is the same age as her son. She explains that she was lucky to get the job because she recommended the school to her, but she is happy that her first project is to work with the children in the nursery school. The two parents decide that they will go to the company, and they have to leave the door open until morning so that they can't leave the house. When the children wake up, they find that the dog is crying because he is afraid of the company and his friends, and he asks the mother to soothe him with a doll.