Xiao Sheng, an apprentice at a car repair shop in Nancheng Old Street, lost his parents when he was young. He grew up in a crowded market and developed the ability to observe words and emotions and the tenacity to refuse to admit defeat. He thought he would only be associated with wrenches and oil in his life, but because of an accidental rescue of a mysterious old man who was being hunted, he accidentally got involved in the undercurrent of the urban underground world and the business world. The half piece of dragon-patterned jade pendant left by the old man not only hides a shocking secret, but also becomes the key to his destiny. From a low-level apprentice who was oppressed by gangsters to an upstart who stirred up the world, Xiao Sheng relied on his extraordinary courage, the survival wisdom learned in the market, and the brothers and beauties he met along the way to fight his way through swords and intrigues. He protects his relatives and friends in the old street, resists the encroachment of evil forces, integrates scattered forces, and finally rises from the dust of the city to become a "hidden dragon" who straddles the black and white lanes and protects the peace of one side, interpreting a passionate legend about persistence, counterattack and friendship.
