Kim Min Jun, feeling stuck in his 9-to-5 job, is shocked when his ex, Jin Hwan, returns as a new colleague. As Min Jun struggles with his past, Jin Hwan has other ideas.
As they reach their one-year anniversary, Min Jun prepares a gift and Jin Hwan arranges a dinner. Jin Hwan suggests that the two move in together, but Min Jun is apprehensive about the future. Will these two finally be able to come to an understanding after one -year of being together?