The story of how a miserable Hao Lan became the queen of Qin dynasty with the help of the witty Lu Bu Wei.

The Legend of Hao Lan depicts the fights between the Qin and the Zhao state towards the end of the Warring States period. After Zhao's imperial censor Li He gets caught in a trap and goes bankrupt, his daughter Li Haolan (Jinyan Wu) is sold to Lü Buwei (Yuan Nie). Buwei will later offer her to the King of Qin Sun Yiren (Zijun Mao) who is held hostage in Zhao's palace. Buwei and Haolan enter the palace where they have to outwit Princess Ya (Ling Hai) and others who try to harm them.—CdramaBase

Li Haolan was the daughter of the censor of Zhao. She had married to a violent man. Because of her identity as a concubine's daughter, she has no right to disagree with this. Therefore, she planned to meet with her lover, the Childe Jiao and tell him about this. But surprisingly, Gao Min, the legal wife of her father got the letter to Jiao. She ordered her men threw Haolan into the water and secretly murdered her mom. Haolan survived but she was caught again and sold to Lu Buwei, an ambitious businessman. Lu treated her well and was willing to help her. After all this, Haolan decided to take her revenge.—Yang Ge