After their 4 children become independent, an old couple decide to live for themselves. One day, their 4 children come back to them.

Fair Princess Jungmyung lives a life of the highest privilege, until her half-brother Prince Gwanghae executes the rightful crown prince and usurps the throne. Exiled from court, Jungmyung goes under disguise as a man and learns to adapt to life as a commoner — never forgetting Gwanghae’s wrongdoing. But amidst rampant corruption throughout the kingdom, can Jyungmyung exact her vengeance, restore order and take back her rightful place in the palace?