Five years ago, Zhao Zheng, the all-powerful Dragon King of the North, was forced to retire due to a conspiracy. In order to protect the love of his heart, he chose to marry into the Su family and became a useless son-in-law who was ridiculed. For five years, he suffered humiliation and silently guarded his wife Su Wanqing. However, the peaceful life was broken, various forces began to surface, and former enemies began to prepare for action. In order to protect his wife, family and former comrades, Zhao Zheng had to pick up the sword again, uncover the truth step by step, return to the top, and become a true king. The story is interspersed with urban business wars, family grievances, and the emotional development between Zhao Zheng and Su Wanqing, and finally shows the story of a god of war reborn from the ashes in the city.
