The action of the Russian detective-comedy series "Mentozavry" takes place in the Kolomensky district of the city of St. Petersburg. All the employees of the operational service working in the 101st department have some professional "flaws". They are the ones who were dissatisfied with the management in the past, but instead of firing them, they were given a chance to work until retirement age. Major Shvedov abuses alcohol. Orekhov is addicted to gambling. And Spassky is hiding from his boss because he was involved with his wife.