Queen Won Kyung was born to Min Je in the Goryeo period. She came from a prestigious family that produced numerous high-level government officials over many generations. Queen Won Kyung, known as Lady Min at the time, is married to Lee Bang Won, known as Prince Jeongan. His father is King Taejo, the founder and the first ruler of the Joseon dynasty.
Lee Bang Won wants to become the next king, buthis father selects his second son, Lee Bang Gwa, as his successor. Lady Min and her husband, Lee Bang Won, are not happy about that. She works as a kingmaker to help Lee Bang Won become King Taejong, and they create a new regime. After Lee Bang Won became the king, he acquired many concubines.
Queen Won Kyung is upset with his concubines, and her relationship with King Taejong deteriorates. To strengthen his authority, King Taejong moves to keep Queen Won Kyung and her family in check.