The celibate CEO Alex, born with a pure-yang constitution, cannot live past New Year's Eve. He finds by chance that Luna, the only woman with a pure-yin constitution, can cure him, so he marries her to survive, gradually falling for her. On hearing that Luna's life will be in peril after saving him, Alex is put in a dilemma.
Molly, a college student, meets Jason by chance and gets pregnant. As they fall in love at work, he saves her from a forced marriage and marries her. When Jasmine tries to stir up trouble, her schemes reveal Molly as the true Shaw heiress. With family support, Molly and Jason overcome challenges and find happiness.