Movie 18 vs. 29 ep 01 | korean | English subtitles

Yoo Hye-chan (Park Sun-young) is a 29-year-old housewife who's unhappily married to a top acting star, Kang Sang-young (Ryu Soo-young). While on her way to court to file for divorce, a car accident drastically changes her life. Though she physically recovers, retrograde amnesia causes Hye-chan to mentally revert to that of an 18-year-old girl, and she finds everything around her unfamiliar.