Modern-day young woman Su Yao accidentally enters the world of a novel and becomes a helpless little white dog with nowhere to turn. She encounters Xiao Hanyuan, the notorious Regent, only to discover that he can actually hear her inner thoughts. With her brutally honest observations, Su repeatedly exposes the schemes of a poisonous cousin and an undercover steward within the manor. She also repeatedly warns the Prince of impending dangers during palace banquets and border conflicts, helping him escape countless deadly traps. Xiao Hanyuan gradually develops a special fondness for the clever little dog. After putting down the political rebellion at court, he searches far and wide for extraordinary people, desperately hoping that Su Yao can regain her human form so they can spend the rest of their lives together.