Sweet and well-behaved Xiao Nan Nan is not only the princess of a royal palace, but also the dreaded bounty hunter Qishierdao in the world. Qiao Mu is a lowly invisible person in the government office, but in fact, he is smart, likes strange tools, and is obsessed with solving old mysteries. After accidentally learning about Qishierdao, Qiao Mu decided to arrest him, and the "cat and mouse game" between these two began...
Driven by vengeance for her father’s death, A Mu disguises herself as a man to infiltrate Chiyin Manor. She is soon discovered by young master Chu Jingchen, who secretly protects her while pretending not to know her true identity. Blinded by hatred, A Mu fails to recognize her growing feelings for him. As they face countless trials, they uncover a hidden enemy lurking in the shadows.