A refugee boy from the war-torn Caucasus region in Southern Russia in the 1990s falls in love with a Russian girl, Princess. Their respective gangs, set on religious and ethnic intolerance, stand in the way of their love.

In turbulent times for France and herself, the first minister of the Kingdom of France, Cardinal Mazarin, asked Queen Anne of Austria to give him the names of four friends who successfully helped her in the fight against Cardinal Richelieu. Under pressure from Mazarin, Queen Anne calls the name D'Artagnan, lieutenant of the royal musketeers. Mazarin calls D'Artagnan and orders him to find Athos, Porthos and Aramis in order to attract them to his service...

The ancient northern monastery has a guide Tatyana. Two former classmates seek her favors: medical student Ivan and young businessman Yves (that is, also Ivan). As a result of a fall from a balloon, the girl is in a coma. Only Ivan Voronov can deduce from this state if he is near. He decides to help his beloved by entering into intimacy with her. The nurse who discovered them reports to the police. Ivan was arrested as a "maniac", and the life of TANI is under threat again ... "

The Chernomorsk city is preparing to hold a holiday of laughter. Come here popular actors of theatre and cinema. Local cultural activist Alex Muromtsev brings guests into a luxurious country house that was once the dacha of Stalin, and has no idea that Stalin was already waiting in the chambers…

The series tells about how police officers, investigating the case of robberies and murders in hotels, managed not only to neutralize, but also to expose major plunderers of socialist property.

A classic mystery story based on Arkadi Adamov novels.