Luna Morgan is the chief secretary and secret lover of Dustin Farrell, the CEO of Zenith Group. For three years, she gives him everything, even losing their unborn child in an accident. After mistakenly believing Luna is the Gardner family's daughter responsible for his grandfather's death, Dustin deliberately pushes her away and uses the scheming Paige Cooper to provoke her. Heartbroken, Luna resigns, only to discover that she is actually the long-lost heiress of the Gardner family. She returns to her family as vice president and becomes Dustin's business rival. As Dustin gradually learns that his grandfather's death is not the Gardner family's fault and that Luna once loses their baby because of him, he is consumed by regret. Driven by jealousy, Paige crashes her car into Luna, and Dustin risks his life to save her.
In the end, Luna chooses to study abroad. Letting go of his hatred, Dustin follows her overseas and wins her back again as a professor.
