Shen Zhiyan's parents were both glorious anti-narcotics policemen, but they disappeared for no reason when Shen Zhiyan was 3 years old. Shen Zhiyan was brought up by his sister Shen Yuezhi. After graduating from the police academy, he entered the first detachment of the Guangning Municipal Public Security Bureau as an intern despite his sister's objections, but found out that the captain was his sister. Only then did he learn the reason why his sister opposed him becoming an anti-narcotics policeman.
She also learned that her sister had been looking for her parents after becoming a police officer. After learning that her parents were killed by drug lords, Shen Zhiyan, her sister and policeman Qiu Jing investigated the tragedy of that year together.
Purpose: May the world be drug-free