Ye Xiaoyao was the eldest young master of the Ye family, a powerful ruling clan in the Dragon Kingdom. Kidnapped as a child, he was adopted by the divine physician Sai Huatuo and mastered peerless medical skills and martial arts. At eighteen, he came down from the mountains with a marriage contract, only to be looked down on by the Liu family for his lowly status and forced to marry their overlooked eldest daughter, Liu Ruyue. He suffered humiliation at every turn. On their wedding day, the leader of his secret guards returned with trillions in assets and vast influence, helping him secretly build a business empire. Using his status as a live-in son-in-law as cover, Ye Xiaoyao protects his wife in secret and gets face-slapping revenge on his enemies, gradually uncovering the conspiracy behind his kidnapping and taking on traitors within his family and the forces of enemy nations. In the end, he sets out to inherit the throne of the God Emperor.