Overview: Hyun Jae suddenly comes knocking at the door, sending Hae Jun and Yoon Jae into a frenzy to hide the evidence that Yoon Jae was there. Hae Jun pretends to be nonchalant as she lets him into the house. Meanwhile, Soo Jae gets a strange feeling when the gym that he took over isn't open. He calls his friend Chang Yeol, but he doesn't answer.