Tang Yixuan, a senior high school student from a poor family, went to Xishan to collect medicine and fell off a cliff in order to repay Wang Mazi's debt and protect his ancestral home. He met a fox fairy who failed to survive the tribulation, and the essence and blood merged to form a symbiotic contract. He obtained immortal cultivation skills and medical skills, and used them to help the country solve the space agency's engine problems and collect soul-nurturing materials for the fox fairy. In the end, the materials were gathered to help the Fox Fairy repair his soul and obtain the ultimate inheritance.
