Mira in her late 40’s has been living in Paris for around 20 years. Having just divorced her French husband, she decides to visit Korea, and meets her old friends Young-eun and Sung-woo. While having a cheerful time in the bar, Mira goes to the toilet and after she returns, time is reversed back to 19 years ago. It is the day of Mira’s farewell party, before she left to France.

Ji Sun Woo is a family medicine doctor. She is married to Lee Tae Oh and they have a son. She seems to have everything, including a successful career and a happy family, but she is betrayed by her husband and others.

Meanwhile Lee Tae Oh dreams of becoming a famous movie director. He runs an entertainment business with the support of his wife Ji Sun Woo. Even though he loves his wife, Lee Tae Oh falls into a dangerous relationship.

A paragliding mishap drops a South Korean heiress in North Korea — and into the life of an army officer, who decides he will help her hide.