After a successful career as a plastic surgeon, Yeo Jeong-woo faces a swift downfall; Nam Ha-neul collapses amid a brutal career as an anesthesiologist.

Jeong-woo moves into a new home and runs into his old rival, Ha-neul, who is his neighbor; as her well-being goes down hill, Ha-neul makes a stand at work.

When Jeong-woo's home gets broken into, Ha-neul asks him to stay at her place; after the two share a night of fun, she decides to help him in his trial.

After a trip together, Jeong-woo wonders if he was Ha-neul's first love, until she goes on a blind date; Ha-neul goes on an interview for a faraway job.

Jeong-woo travels far to show up for Ha-neul after her interview; several heart-to-heart moments force her to ask him how he truly feels.

A run-in with an old classmate leaves Ha-neul feeling jealous; regardless, she gives Jeong-woo much-needed emotional support, which opens him up.