Lin Xi, who is afraid of snakes to the core, never imagined that he would be tied to a snake - and the king of snakes -. With a contract, the cold and handsome Snake King Cangming became her "fairy family" and a nightmare that she couldn't get rid of. He used her hand to quell the evil spirits, but she knew very well that there was a cold calculation behind this "protection": Cangming needed her spiritual power to resurrect his legendary lover who had been dead for hundreds of years. Lin Xi endured his use and struggled to survive in the bizarre supernatural world. Until those memory fragments belonging to "General Rakshasa" began to sting her soul - the iron horse, the blood-stained river of Styx, and a figure that overlapped with Cangming's face and was deeply in love with her! She was shocked to realize that in her previous life, she was a famous evil general in the underworld! And the "beloved" that Mo Yuan never forgets and crazily resurrects is just a despicable person who stole her blank memory when she was separated from Cangming and pretended to be her! The deepest feeling of betrayal is like a poisonous snake biting my heart. She looked at Cangming, the snake king who used her and tortured her for a false lover, but instinctively leaned in to protect her when she encountered a fatal crisis; when she showed the edge of her previous life, unconcealable throbbing and confusion flashed in her eyes. His love was transferred quietly without knowing it, but he was trapped in the cage of lies created by himself. When Lin Xi grasps the power of his previous life and is determined to tear apart this absurd substitute fate; when Cangming sees clearly the face of his true love buried deep in his heart and transcending reincarnation at the last moment of the resurrection ceremony... How will this contract that started with use and deception end? Is it the complete annihilation of old love, or...