Kyeong Suk married a wealthy older man at 19. After losing both her husband and mother-in-law, she comes to depend on her son, Jeong Su, a doctor. When he introduces his girlfriend, Hyeon Ju, Kyeong Suk disapproves of her humble background. Despite the tension, the couple marries—but Kyeong Suk continues to make Hyeon Ju’s life difficult.

After Jeong Su dies in a car accident, the two women go their separate ways. Years later, fate takes a surprising turn when Kyeong Suk remarries—only to become Hyeon Ju’s daughter-in-law.