Irina and Natalya had a rare luck - to go on a honeymoon instead of the newlyweds, and even to Scandinavia. And no one suspected how this trip would turn out upon return. In front of Irina’s eyes, her compartment neighbor, Shurik, gets hit by a car. The collision was not accidental. It is impossible to forget this incident - Shurik’s jacket, discovered by Irina in her belongings, forces her to look for the coordinates of the Kochnevs, because in the pockets of the jacket there is a large sum of money and a train ticket. And a series of continuous mysteries begins: “Shurik” is not Shurik, the suspect is the victim, and the hacker is the hero. And most importantly, a bunch of applicants for a long-expired ticket are discovered. Trying to uncover his secret, the heroines discover this!..