Jiwon is spending a happy night with a man who came over for a one-night stand when he hears the sound of a fight coming from next door. He brushes it off at first, but starting the next day, drunken voices singing breakup songs echo through the night. Unable to stand it any longer, Jiwon goes to confront the neighbor.

There, he finds Hyuna watching a video from a singing contest that has become one of Jiwon’s darkest past embarrassments, and when the man from the video shows up, Hyuna is just as shocked…