Ning Zhao, the legitimate son of the Ninghou Mansion in the Daning Dynasty, was drugged by his concubine when he was young and pretended to be stupid to save his life. In fact, he had amazing observation skills and was good at using "silliness" to make plans. Shen Yanzhi, an aide suppressed by the Hou Mansion, entered the Hou Mansion to avenge his family's frame-up, but because of Ning Zhao's true Cheng and Hidden Chongming gradually let go of their hatred, and the two went from testing each other to working side by side, step by step defeating their concubine's mother, concubine's brother and other rivals in the house, revealing the truth of the past. At the same time, their relationship went from guarding to running in both directions, and finally secured their position in the prince's palace and achieved success.
