Jae Hyung and Hyun Ha fluster as Moon Sik suddenly comes into their house and calls Jae Hyung as a brother. Yoo Ha, Jae Hyung, and Hyun Ha feel uncomfortable living with Mi Yeon, so they visit Sun Ha to talk about their thoughts. Sun Ha feels disappointed as Hyo Seob takes Mi Yeon’s side when she talks about her siblings’ discomfort living with Mi Yeon. Meanwhile, Yoo Ha starts her resident life and learns strictly by Eun Tae, who is professional in the field. She feels tired but happy. In the meantime, Sung Woon appears in front of her.