Deng Ling, a modern wilderness explorer, travels through her soul to the wild beast world where there are many males and females and the weak eat the strong. She becomes He Xi, a female of the fox tribe. With the help of ancient Chinese martial arts, herbal medicine and the 40th century highly intelligent biological system Yuanyuan, she struggles to survive in the beast world under the 24-hour countdown to life and death, finds a high-level beast king to marry and continue her life, and at the same time opens the way to collect biological information in the beast world.