Su-ho and Hyeon-seo, who once dated for six years, meet again as a young CEO and a piano instructor.

Su-ho and Hyeon-seo begin a tense first lesson, and K tries to recruit Hyeon-seo as a collaborator.

Su Ho, Hyeon Seo, and K live together and work on their music project.

Su Ho and Hyeon Seo talk about their breakup for the first time, and things become awkward.

Su Ho and Hyeon Seo wake up together, leaving Su Ho confused about their relationship.

Su Ho and Hyeon Seo start dating again, but it is not all roses.