In the 21st century, Su Jiuli, a descendant of a family of poisonous doctors, once traveled through time and became a useless concubine who could be bullied by everyone in the Yan Dynasty. Her biological mother died tragically, and her aunt and sisters framed her, turning her into the murderer who poisoned the old lady, leaving her life hanging by a thread. However, how could she let others take advantage of her?
Mysterious power was added to her when she traveled through time. She was fused with the remnant soul of the "Nine Nether Phoenix" that can control life and death. She has extraordinary medical skills and superb poison skills. Facing the people in the government who framed her, she retaliated with tooth for tooth, used poison to control the enemy, and made those with evil intentions pay a heavy price.
The prince Xiao Chenye has a noble status, but he is involved in the whirlpool of the royal power struggle. He possesses the long-lost Nether Fire, which is evil and powerful. By chance, he rescued Su Jiuli who was being hunted, and the two reached a cooperation. Su Jiuli helped him eliminate political enemies, and he helped Su Jiuli get revenge.
In this world where intrigue and power are intertwined, they work together to face the conspiracy of the third prince Xiao Chenjue and the calculations of the witch in southern Xinjiang. The Duke of Zhenguo secretly colluded with the South Xinjiang witchcraft sect in an attempt to use living people to refine the poison, control the power of the Nine Netherworld Phoenix, and overthrow the Yan Dynasty. Su Jiuli and Xiao Chenye went deep into dangerous places to explore the truth, but found that there were greater secrets hidden behind everything, related to the secrets of the royal family, ancient powers, and the fate of all people in the world.
From the conspiracy in the Zhenguo Palace, to the exploration of the mysterious ice cave, to the life and death battle in the palace dungeon, every step is surrounded by dangers. Can they break through the difficulties and solve all the mysteries? Can Su Jiuli successfully take revenge, rewrite the fate of herself and Xiao Chenye, and protect the peace of the world?
