In Chongqing, there were "three princes and four princes" who assisted the country. Ning Yanchen was born in the Ming Dynasty Duke's Mansion, the head of the three princes, and his mother Suyu was the legitimate daughter of the Dingguo prince. Ning Yanchen has lived in a dark backyard for a long time. She once thought that Ning Fuyue was the only clean person in the backyard. Later, she realized that she was just better at hiding and calculating than others. Who could tell her the meaning of her existence. The current emperor's favorite eighth prince is a demon king that everyone fears, but no one dares to say a word about him because he is a prince. The eighth prince Ao Xiuyi met Ning Yanchen by chance, which was really an "extremely unfortunate" thing.