In the early years of Yongle, Shen Zhinian, the legitimate daughter of General Dingguo's palace, suffered mental stasis due to a high fever when she was young, and was regarded as a stupid and stupid laughing stock by the whole capital. In fact, it was a blessing in disguise that she accidentally awakened the power of peering into people's hearts. Her mother died young and her father ignored her. Her stepmother and concubine regarded her as a thorn in their side and wanted to get rid of her soon. Shen Zhinian endures and lies dormant, performing "idiot" to the extreme, secretly collecting people's secrets and weaving an intelligence network. She leveraged her strength and used the greed, jealousy and fear of all parties in the house fight to cleverly set up traps, resolve crises time and time again, and kill her opponents. During this period, she got acquainted with Yan Wugui, a knight-errant who was entrusted by her late mother to secretly protect her. From testing each other to walking hand in hand. As Shen Zhinian gradually gained a foothold in the family fight, the cause of her mother's death, family secrets, and even the shocking conspiracy involving the Yongle Dynasty gradually emerged. She is no longer satisfied with self-protection, but takes the initiative, using the house as a battlefield and people's hearts as pawns to engage in thrilling games with the masterminds behind the scenes. She eventually reveals the truth, completes her revenge, and finds her self-worth and true emotions in the process.
