The story takes place in the ancient and mysterious Silla Kingdom. The evil wizards slaughtered the Auta tribe and inserted the sword into the sacred tree believed by the Auta tribe, forever sealing the unwillingness and resentment of the Auta tribe. In a blink of an eye, many years have passed, and it has come to the era ruled by the True Saint Queen (played by Kim Hye-ri). General Feihelang (played by Zheng Junhao) is deeply loved and trusted by the queen. He has fought and killed countless enemies for the country, but this bloody life has brought Feihelang only pain. Feihelang is in love with an ordinary woman named Ziyunbi (played by Kim Hyo-jin). The ministers who want to usurp the throne in the court sent assassins to hunt down Ziyunbi and blame the queen, in order to provoke the relationship between the queen and Feihelang. Ziyunbi, who was forced into a dead end by the assassin, pulled out the sword from the sacred tree. In an instant, the vengeful spirit of Ota, the leader of the Auta tribe, attached to Ziyunbi's body. He wants to start his revenge plan with Ziyunbi's body.