It stars Jeon Do-yeon and Gong Yoo as two people who meet and begin a love affair in Finland.

Several months later back in South Korea, Sang-min fixes a display at her clothing shop and sees Ki-hong walking by.

Ki-hong finds himself serving more as a guardian or older brother than a husband to his wife, and spends less time with her and their daughter after each mental health episode.

Eventually, both Sang-min and Ki-hong reconnect and begin seeing each other covertly, hiding their relationship from friends, family, and co-workers as an escape from the tremendous difficulties they face in their separate lives.

Heartbroken, she flees, although Ki-hong notices and attempts to follow her in his car but stops when he sees his daughter through the restaurant window.