Three years after his marriage, Xu Biao was a good-for-nothing son-in-law despised by everyone in Jiangcheng. His mother-in-law is so mean and his wife is so cold and distant that even his three-year-old nephew can yell at him. He endured it silently, hiding all his shocking secrets and extraordinary methods, just to fulfill the promise he made to his wife and family. When his wife's family faced a crisis and was on the verge of bankruptcy, and all relatives shunned him, Xu Biao finally stopped hiding. A phone call stirred up the situation in Jiangcheng; with an order, all forces bowed down. The former good-for-nothing son-in-law turned out to be the heir to a hidden wealthy family, the uncrowned king of the underground world, and the controller of a top technological empire. He used his absolute strength to tear apart all ridicule and contempt, protect his wife, establish order in Jiangcheng, step by step uncover the truth of the family's tragedy, and finally stand on top of the world, writing a legendary chapter that belongs to Xu Biao.