Na-yŏng works at a post office and is sick and tired of being around her shamefully unyielding mother and her pushover father. The only thing that she can look forward to is her trip abroad in a few days. But one day, her father leaves home without any notice. Her mother doesn't care what happens to him and doesn't care to look for him. Na-yŏng has no choice but to give up her dream trip abroad and to search for her father instead. Once she arrives at her parents' hometown, Na-yŏng falls into the time and place her mother lived in 30 years ago. After falling into this mysterious world, Na-yŏng gets tangled up in the middle of the love that unfolds between her mother and father.
