The drama is a fantasy costume drama that tells a love story of court survival and fierce competition for the "position of the queen". It describes the endless competition, love and betrayal of people with their own goals to choose a woman who can stand by the king. Jin Se-yeon plays Jiang Enpu, who has a beautiful and lovely appearance, but is actually a brave and courageous heroine who arms herself with action. She entered the palace to become a queen for the murderer of her sister, and is a person who knows her goal very well. Kim Min-kyu plays the king, Li Jing, who is proficient in learning and has a handsome appearance. He wants to be a shameless king who puts the people first. He is a person who pursues love and has dreams. Lee Si-eun plays the owner of Furongzhou, who uses the nickname "Yue" as his real name. Do Sang-woo plays Lee Jae-hwa, who suddenly becomes the first prince in line to the throne one day. He has a free soul, but suddenly enters the palace and begins a reckless life. Li Lieyin plays Zhao Yingzhi, the daughter of Left State Councilor Zhao Xingjian. She is a lady from a noble family who smiles a lot and cries a lot. She is careful in every move so as not to embarrass her father.