Kai-En gets food allergy and goes to the hospital. Yi-Fan visits him and sees Su Da holding his hand. It makes him angry with Su Da. Su Da's fear for marriage makes his fiance confront him.

Yi-Fan takes care of Kai-En in the hospital and escorts him back home. It makes Kai-En deeply moved. Su Da decides to speak with Kai-En about their relationship in the past and end it once for all. As he's ready to devote himself to the marriage, his fiance disappears.

Su Da regrets about his fiance's leaving and goes to K. to ask for everyone's help. He learns about that his fiance is leaving for Thailand, and all of them rush to the airport to get him back. In the meantime, Yi-Fan and Kai-En are gossiped as a couple.