In an era where the Demon King rules, with his demons running amock and causing chaos in the world. The remaining cultivator elders, in a desperate attempt to stop him, send Li Su Su back in time to prevent a mortal man from awakening to the current Demon King Tan Tai Jin (that is ready to shed their blood). Li Su Su, her eyes filled with anger, sadness, and determination, stares back at Demon King and swears that he will die for the evil deeds that he has done. Now a mortal after being sent back in time, she witnesses the life of Ye Xi Wu which ends up making it complicated for her to complete her mission.