Ling Su, an abandoned herb-gathering girl, relies on her extraordinary talent for herbal medicine and a mutilated ancient book to survive step by step in the sinister world of cultivating immortals. She accidentally rescued Feng Xuan, a mysterious man who was hunted by the world and poisoned by a strange poison. The fate of the two has been entangled ever since. Ling Su, with his superb alchemy skills, became Feng Xuan's only hope for survival; while Feng Xuan, with her absolute strength, became Ling Su's strongest backing in her counterattack. The main line of the story revolves around Ling Su's growth from a mortal girl who was bullied to a medicine god respected by the three worlds. In the process, she uncovers the mystery of her life experience, and at the same time helps Feng Xuan unlock the curse and avenge the enemy who destroyed his family and country. In the process of supporting and redeeming each other, the two composed a pure love song in which they loved each other and depended on each other for life and death.
