Kim Mi-So further suspects that Young-Joon is boy from her past and becomes certain when she recognizes him on his young photo. Just to be sure, she asks Lee Sung-Yun to tell her which of the boys on the photo is him, to which he too is surprised because he thinks she remembers him and because he still believes he was the kidnapped boy and not his brother. Guys at work decide to have welcome party at Kim Ji-Ah's new place, and things become hectic when both Ji-Ah and Gwi-Nam try to hide him. Young-Joon goes to an annual special day that Mi-So hangs out with her sisters. His goal is to make them like him and to show them he is serious about Kim Mi-So. Sung-Yun is devastated after finding out he had wrong memories. Mi-So has a flashback while watching magic art and just before passing out realizes she remembers everything.