The story is about why people's destinies are intertwined, how they influence each other and how this changes the world around us.

Paleographer and writer Anton Glebovich Kosmich finds in the binding of an ancient book a parchment with encrypted information about treasures hidden in the dungeon of the castle. It gradually becomes clear that the last scion of the family of the Olshansky princes, who collaborated with the Nazis during the war, is also looking for the treasure. In the dungeon of the castle, along with treasures of the 17th century, materials from the SD archive are also hidden. The spaceman is in mortal danger.

Not young bus driver goes to the next trip. In this trip he recalls his childhood during WW2. But there is another danger people among passengers of the bus.

Criminal investigation is investigating the case of robbery of the factory cashier. At the checkpoint of the factory of precision mechanics and optics, two criminals attack the cashier. Criminals manage to escape by the car, waiting for them around the corner. At the scene of the crime, criminal investigation officers arrive Major Dorokhov and Lieutenant Matushkin. They interview witnesses, but they did not remember properly any attackers or machine numbers, but noticed that one prevented the other from firing.

In one small provincial town lives Savva Kulikov. In ordinary life, he is an exemplary Soviet citizen and an up-and-coming economist, but Kulikov has an unusual hobby — he trains his own pets, teaching them many amusing stunts. Among the "pupils" Savva already have a dog, a cat and even a parrot. One day the chimpanzee gets into Savva's hands. The animal was easy to train, with dexterity performing all the tricks of Kulikov, and he decided that his hobby should go to a new, more serious stage - performance in public. Circus friends help Savva break into the circus arena. The main character performs with his monkey in a local circus and the show was an incredible success, breaking a storm of applause from a grateful public.

Immediately after the prom, Olya Rusanova arrives in the city where her father worked and tragically died. Many years ago he dreamed of building a city, and now she is walking along the street bearing his name, a street without end. Having met her father’s friends, Olya learns him anew. They tell the girl how her father wanted to see large houses and wide streets on the site of the tent city. How he knew how to be friends and to love, and how longed for Olya when he broke up with his wife, who didn't agree to go with him.