The male protagonist Chen Feng, an ordinary deliveryman who inherited the "Xingyiquan" inheritance of a declining martial arts family, accidentally got involved in an underground dispute surrounding a lost martial arts secret book in the reinforced concrete of the modern city. In his adventure of protecting inheritance and upholding justice, he not only has to deal with opponents with high-tech equipment, but also balances the conflict between traditional martial arts and modern rules. In the end, he grows from "a warrior hidden in the city" to "a chivalrous man guarding the glimmer of the city."
