Seong-jun gets flustered when Gyeol catches him looking at his old high school album. Eun-ae and Gyeol make up their mind about going to the US while planning to investigate his father's accident together. Touched by Min-ho, who took care of her all night, Seung-ri quietly grieves and reflects on her memories with Gyeol. Meanwhile, Seong-jun learns that Gyeol is pursuing the truth. After losing contact with Seung-ri for over five hours, Min-ho hears that she has gone missing.
