The heiress of the wealthiest family hides her identity to repay gratitude, marrying into a family where she remains undercover. Three years later, she discovers her husband cheating and learns that her identity as the heiress has been stolen by the nanny's daughter. Bullied and driven out of home, she faces relentless hostility from those who ousted her. No longer willing to be lenient, she decides to take a stand.