An Lisa wakes up her family in the middle of the night in a panic. Hui-ju can't shake the suspicion that the reappearance of Gu Hae-won is more than just a coincidence.
Years ago, Hae-won and Hui-ju became fast friends when Hae-won gave Hui-ju drawing lessons. One day, when there was an emergency, Hae-won sent a substitute teacher.
Hui-ju is reunited with Woo-jae and learns why he disappeared for so long at the opening of his art exhibition. Hae-won consults a doctor about his condition.
Hui-ju feels backed into a corner when her mother-in-law gets hold of Ho-su's birth certificate. Woo-jae returns from his trip with a question for Hyeon-seong.
While Hae-won refuses to get a divorce, Woo-jae's behavior towards Hui-ju becomes more brazen. Meanwhile, An Min-seo struggles with her abusive marriage.