The protagonist Wu-Lin rises on a dark path in the name of revenge. He is not a simple man, but the heir of the ancient, once powerful Chinese clan "iron legs". After the death of the head of the clan, Wu Lin left the village and arrives in the city in search of his brother. By chance, he becomes the bodyguard of Fay Fei, a girl from a rich family that they want to kidnap. Wu has to apply all his skills and demonstrate his skills in order to reach the one who is willing to sacrifice everything for the sake of success. Wu Lin is forced to fight and confront a huge number of dishonest villains, directed to those who are at the head of the conspiracy against the city.