Hyunjin and Seungmin have been rivals since their first year of university, constantly competing and clashing in everything they do. When they are forced to work together on a major project, their differences seem impossible to overcome. But as late nights and unexpected moments bring them closer, their rivalry begins to shift into something neither of them expected. Between stolen glances, lingering touches, and hesitant confessions, they realize that maybe-just maybe-love was hidden beneath the animosity all along.