In the modern city, there is a parallel world where martial arts are far superior to ordinary people, and martial arts inheritance and technology coexist. Lin Yan was regarded as a waste since he was a child and was looked down upon by all. However, he accidentally received the inheritance of the ancient martial master and started on the road to defy heaven. Along the way, his enterprising spirit and sense of justice infected the people around him, gained friendship and love, and also aroused powerful enemies and conspiracies. Lin Yan faced powerful warrior groups, family grievances and power challenges. Through continuous fighting and growth, he finally stood at the pinnacle of urban martial arts with an invincible attitude and achieved his own legend.