Although Zhu Guli (played by Xu Guanwen) thinks he has outstanding abilities, he has been in the police force for many years and has only been promoted to assistant. He has been doing nothing in the police station with his cowardly assistant Dan Tart (played by Xu Guanying). On this day, Jiaojiao (played by Anita Mui), the daughter of Zhu Guli's boss, reported for duty as a new soldier and was assigned to Zhu Guli. Jiaojiao and Zhu Guli dislike each other, and the boss feels sorry for his daughter, so he also specially assigns some simple cases to Zhu Guli. Zhu Guli is even more disgusted with Jiaojiao. Zhu Guli received another missing person case, which he did not take seriously. However, as the investigation progressed, the case suddenly took a turn and became full of mysteries. Can Zhu Guli, Jiaojiao, the rich lady, and Dan Tart break through the mystery?