Su A Qiao, a lone girl from the mountains who can communicate with all beasts, is found and brought back to the Earl's household, where she is revealed to be their legitimate daughter who went missing eighteen years ago. To visit her gravely ill grandmother, she enters the Marquis's residence with a wolf cub, only to be repeatedly framed and harmed by the adopted daughter, Gu Mingyan. With the help of birds and beasts, she exposes the schemes and crosses paths with Xiao Huaijin, heir to the Prince Jing's title. Together, they investigate the case and gradually fall in love. Their investigation uncovers a conspiracy by the Ningguo household to switch children, seize an inheritance, and poison those who knew the truth years ago. Desperate, their enemies resort to arson, forged evidence, and assassins sent to hunt them down. The pair find irrefutable proof and bring down the Ningguo household. Once the turmoil subsides, Su A Qiao reunites with her family and marries Xiao Huaijin, preserving her true nature amid the intrigues of a noble household and finding both familial love and a happy marriage.