Yoo Min Soo (Shim Hyung Tak) is the eldest son of a hospital’s CEO. His wife, Jang Mi Ryung (Jo Yeo Jung), bore a child out of wedlock but raises it with maternal love. Source News
The drama is about the assassination attempts on Emperor Jeong Jo's life during the 8 day period when he left the palace for a ceremony to honor his father who was killed by his grandfather.