Tae-seong who supposed to call Na-hee that he usually likes, drunk called Mi-yeon, who was not even his favorite. Mi-yeon, unaware of Tae-seong's feelings, visits him in excitement and she spends the night. When he got sober, Tae-seong realizes his mistake and gives up... then Na-hee came to Tae-seong. What could be their relationship?