Su Wanyue, the youngest queen of Dongli Kingdom, is also the "poison doctor" who is feared by the world. She saves people with silver needles and kills people with poison. She appears gentle and virtuous, but in fact she is careful at every step. Shen Yanxiao, the powerful regent, and the secretly "bloody prince" with superb poison skills, met her in the whirlpool of power and intrigue. The two became connected because of drugs, because of their love as a doctor, but because of their contradictory positions, they jumped repeatedly on the edge of the cliff of love and hate. When the border wars and harem conspiracies ensue, Su Wanyue uses poisonous blood as a guide, and Shen Yanxiao protects them with their lives. A "poison-doctor showdown" reveals a shocking mystery of life experience. They are both life-and-death enemies and soul mates. In the game of intrigue and sincerity, they write a legend of "betrothal with poison and promise with life".
