The evil spirit Bai He had been sealed for fifty years and made a blood pact with the tragically deceased Qiao Yingdi (Alian) to possess her body and seek revenge. Bai He died due to a scholar's betrayal, while Alian was framed to death by her brother. Bai He returned to the Qiao family on Alian's behalf, exposed her brother's schemes, teamed up with the second sister Qiao Pan'er to fight back, and finally made the villains pay with their blood.