Jackie is a divorced mother of two. Isabel is the career minded girlfriend of Jackie’s ex-husband Luke, forced into the role of unwelcome stepmother to their children. But when Jackie discovers she is ill, both women realise they must put aside their differences to find a common ground and celebrate life to the fullest, while they have the chance.
Joon-ha had the best night of his life with an older woman he met while drinking. He starts looking for her as he can't forget the feeling and finally they meet. However, she's going to become his new stepmom. She's his father's girlfriend. When the three start living together, things turn edgy and then dangerous when his father leaves the house one day.