Top female assassin Fengwei died seizing a blood-red ancient jade, transmigrating into Bai Fengwei, the spirit-veinless, good-for-nothing legitimate daughter of the Bai family in the Maple Forest Country. With her parents both dead and having suffered endless bullying, she was dumped by the crown prince and plotted against by her cousin Bai Tiantian and the crown prince, who sent her to be buried alive in the royal mausoleum. Bearing a dying wish for revenge, she accidentally encounters the ancient snake lord Mo Jiuli. Recognizing her identity as the destined phoenix woman, he helps her with his cultivation in exchange for staying together. Fengwei awakens the seventh-grade full-system spirit veins, her cultivation surges drastically, and she decisively cuts ties once things are done. Relying on her family's phoenix grand array to hold back her elders, she turns around to take revenge on a crowd of enemies, while the snake lord whom she ruthlessly pushed away rushes forward step by step with full obsession.