Traveling through the demon-ridden world of Journey to the West, a modern young man incarnates as Nie Tian, a young tiger demon. He forges a physical body with the soul of a tiger, uses the power of his fists to break all kinds of magic, and develops a strong physique: a roar shakes the mountains and forests, and a punch can break mountains; bones are as hard to break as black iron, tendons are as powerful as wild dragons, skin is like innate spiritual armor, and blood is like boiling slurry. With the tiger's body as the base and mystical skills as the holy body, the physical body changes three times a day and continues to transform.
He avoids the military fronts of heaven and the schemes of Buddhism, and develops silently in the undercurrent of the journey to the west. Whenever there is danger, he hides his presence, and whenever there is an opportunity, he fights steadily. From a weak tiger demon, step by step, he developed a copper-skinned and iron-boned body and the true body of a demon sage. With the power of his pure body, he could withstand magical weapons and spells and defeat immortals, gods and demons with his fists.
Not worshiping heaven and earth, not respecting immortals and Buddhas, Nie Tian relied on his own body to become a saint in the world of Journey to the West.