When Jae-yeon is rushed into surgery, Woo-hae searches through hospitals to find her. Meanwhile, Nu-ri prepares for her photography practical exam while struggling with the decision of whether or not to meet her birth mother. Tae-rin unexpectedly crosses paths with Seok-ju.

Woo-hae, whose health is deteriorating, hides his condition while growing closer to Je-yeon. Meanwhile, Nu-ri feels conflicted as she takes her practical exam and prepares to meet her birth mother. Seok-ju discovers Woo-hae's illness, leaving him in shock and guilt. Woo-hae is urged to join a clinical trial, forcing him to face the reality of his condition.

Woo-hae and Je-yeon decide to spend their time as an ordinary couple, not thinking about the hardships that might come to them. Tae-rin and Seok-ju still need to adjust to each other, but their affections grow as they do so. Woo-hae is scared about his future, but for now, he tries to live an ordinary life like everyone else.