Shen Li, a modern special military doctor, and Lin Shuyue, a doctor of psychology, accidentally passed through ancient twin sisters and fell into hell mode. Her sister Lin Shuyue was forced to become a "medical slave" in the Snake Cave of the Cold Palace. Facing the physical torture of the crazy prince Xiao Wuye, she used psychology as an edge and worked step by step, weaving a love network among poisons and lies, and reversely controlling his madness; Thousands of miles away, twin souls feel pain and coexist. They share skills and join forces in a tacit understanding in their dreams. When the humiliation of the substitute turns into the flames of revenge, and when Yao Yin's identity is reversed and becomes a chess player of destiny, a shocking game about intrigue, sadomasochism and the counterattack of two powerful forces begins.
