Tae-san continues to struggle with the idea of Meari and Yoon's age difference and he is unwilling to accept their love for each other. In the meantime, the guys can no longer ignore Colin and have to make a decision.

Yi Soo is still hurting but she's in the mood for revenge. Jung-rok, Tae-san and Yoon are adjusting to having a new family member but end up accidentally embarrassing him.