1x40 - Revolutionary Sisters

Gwang Nam and Byun Ho go to an ob-gyn clinic. After speaking to the doctor, they decide to try IVF treatment, but they are very careful to keep it a secret from Poong Nyeon. Meanwhile, Gong Chae introduces Taeng Ja to his brother, saying that she is his fiancee, and Ki Jin runs into a mysterious man who claims to be Gwang Tae's biological father.