How would you feel if you saw your husband cheating on you with your best friend? Three days before Christmas, Calista finds Damian, her husband, had an affair with Camilla, her best friend, and gave her divorce papers. She leaves town with a broken heart and a pregnancy she hasn't told anyone about. Moving to her parents' home town, where she lived before marriage, she meets Sean—her ex-boyfriend and her brother's friend. From the Christmas reunion night that brought them together, Sean makes Calista a deal: a two year marriage contract for her father's medical bills and pay the family debt. Meanwhile, Sean is required to marry by his family to inherit a major company. That's not all. Sean agrees to help Calista achieve success, 'cause he still secretly loves her for years. Will Calista be able to make Damian regret? What will Damian do after seeing Calista become a newest successful entrepreneur? How will Sean protect Calista from the cruel life that comes after her success?