When a charming woman and an experienced investigator of the city prosecutor's office, Klavdiya Dezhkina, receives a task from her superiors to find someone's missing dog, her indignation knows no bounds. What is behind this half-mocking order? Lack of professionalism, which has become common in law enforcement agencies? Eternal male disdain for a female colleague? It would be nice if the missing dog was a purebred dog, otherwise it’s a mongrel... But Dezhkina soon finds out that this “mongrel” is specially trained to search for drugs, and that her disappearance entails a whole chain of serious crimes.