After a call saying her mother is sick, Yun-ji hurries home but gets lost in the subway station. A small girl separated from her mother appears at the lost and found and registers herself as lost property. Yun-ji and her mother don′t seem to be close. The film quietly observes the states of mind of the mother - indulged in her own work - and of the heartless daughter trying to be a good girl. What is lost and to be found again in this mother-daughter relationship? (Hong Hyosook)