The story takes place at the end of the Warring States Period, when the Qin State was growing stronger and more powerful, with great momentum to annex the world. In Zhao State, which was crushed by the Qin State, lived a poor woman named Li Haolan (played by Wu Jinyan) whose family was broken and whose people were killed. When she was displaced and helpless, she was bought by the big businessman Lu Buwei (played by Nie Yuan), and was carefully trained, so she became graceful and charming. Shortly thereafter, Lu Buwei presented Haolan to Qin King Sun Ying Yiren (played by Mao Zijun), who was a hostage in Zhao State. Princess Ya (played by Hai Ling) of Zhao State admired Yiren, so she framed Lu Buwei and Haolan in every possible way. After the Battle of Changping, Lu Buwei made plans to pave the way for Yiren, helping him return to Qin State and become the heir of the King of Qin. Once you enter the palace, it's as deep as the sea. Moreover, on the eve of the unification of the country, even the sky over Qin State was floating with this disturbing atmosphere. A woman like Haolan is destined to witness a legend that has been passed down through the ages with her life...