Mary and Michael, who have been married for many years, have lost their passion and both cheated on each other. However, just when they were both planning to confront each other, the couple who cheated on each other suddenly sparked and rekindled their love. However, faced with the extramarital lover who was closely following them and their son who was about to return, they didn't know what to do. The film reflects on the marriage system, love and responsibility, and the title and ending are full of irony.