The one person who always finds fault with model student Lee Se-hyeon's perfect day is Jeong Nam-in. Se-hyeon, who has been declaring a breakup for months, ends up revealing his only weakness to Nam-in... No matter how much he tries to push him away, Se-hyeon vows today that he will quickly get rid of this idiot who keeps coming back. Will Se-hyeon be able to break up with Nam-in today?