Lu Zhi is the son of Shen Xingjun and Lu Zhaoyan. He is nineteen years old and works as a catcher in Qingxi Town. Strange things happened one after another in the town: Old Man Liu's rice vat was stolen, but the thief left his money bag and a note "borrowing a vat of rice"; Zhang Butcher's butcher shop was stolen, and the person who stole the meat was a monkey who felt sorry for his owner. While investigating the case, Lu Zhi met Liu Sanbian, a con man who had escaped from the capital, and the two became friends. It happened that Gu Yi, the head of the Criminal Department, was investigating the theft of banknotes, and the clues pointed to Heifeng Village. Liu Sanbian took the initiative to go up the mountain to investigate, but returned seriously injured and brought back the news that the second master had fled north with Yin. Gu Yi led Lu Zhi to the border and recovered Ku Yin after a fierce battle. The case was settled, Liu Sanbian stayed in the town to open a grocery store, and Lu Zhi finally confessed his love to his childhood sweetheart, Axiu. When the two got married, Gu Yi sent a congratulatory plaque saying "Qingtian Little Detective". Under the setting sun, Lu Zhi and Axiu sat in front of the tea stall, living an ordinary life like his parents.
