The drama mainly tells about the 14th year of the Republic of China, the return of the student from the UK, Yu Gong Zi, with his high IQ and reasoning ability, was invited by the inspector of the patrol house, Qiao Chu Sheng. After that, the two men joined hands with the female journalist Bai You Ning, who formed a sense of justice, to form a detective squad. They detected a murderous murder case. The three people with different personalities adhered to justice in the chaos and maintained social stability.