Lin Wei, the top animal trainer and pharmacist in modern times, accidentally drowned while taming a deep-sea electric eel and traveled through time to become the last princess of the Yueli Kingdom who was destroyed by Daxia. She first met Xiao Wuye, the fourth prince of Great Xia, who was plotted to fall off a cliff by a deep pool. She saved him with her superb medical skills, but unexpectedly discovered that his leg disease hid a strange poison.
In order to explore the mystery of her life experience, Lin Wei temporarily stayed to take care of Xiao Wuye, and the two gradually fell in love while staying together on the cliff. However, the shadow of identity conflict and the palace's overt and covert attacks followed one after another - the queen and the second prince Xiao Wuchen set a trap and summoned Lin Wei into the palace to diagnose and treat the chronically ill emperor, but in fact they wanted to get rid of it quickly. Xiao Wuye rushed back in time to support him, confessed his identity and asked Lin Wei to treat her leg disease, and used the opportunity of leaving the womb for diagnosis and treatment to help her out of trouble.
Xiao Wuchen practiced evil skills and became a demon, and formed a demon army to cause chaos. Lin Wei led the tamed demon beast troops to join forces with Xiao Wuye to encircle and suppress him. During the fierce battle, Princess Lin Wei's identity was exposed, and she was caught in a dilemma between the hopes of the old army to restore the country and her personal feelings. In the end, she chose to work side by side with Xiao Wuye to help him put down the rebellion, liquidate the queen's crimes, and reveal the poisoning conspiracy many years ago. After Xiao Wuye ascended the throne, he named Lin Wei his queen, and the two guarded the world together, using their ability to tame animals and make medicine to protect their people, creating a legend of staying together that transcended the hatred of the country and the family.