A web-designer receives a letter that says that he must keep silent, beginning with the next Saturday. By the time Saturday comes, the poor designer totally forgets about the weird letter.

The film is set in 1913 Russia during the celebrations of the Tricentennial Anniversary of the Romanov Dynasty. Rich Russian merchants are celebrating their wealth by gambling and playing poker. They are traveling aboard the luxurious cruise liner "St. Nikolai" on Volga river, oblivious to the fact that several gangs of crooks and con-artists are stealing their money in the game. Their target is the wealthiest Russian tycoon Satanovsky.

Andrey loses his beloved dog, and with it the meaning of life. He wanders alone around the city in a fruitless search. One day, a girl appears on Andrey's doorstep and offers to play the role of a dog, taking its place - such psychological help for money. Andrey refuses this crazy idea, but when despair reaches its limit, he... agrees, and the strangest adventure of his life begins.

Three murders are committed in a sanatorium under the poetic name "Cherry Orchard". But the police inspector does not have to break his head for a long time in search of killers - he knows almost everything: who, when and how were killed, the killers - the only thing left to figure out are the reasons...

Zhenya is haunted by the same recurring dream: a mysterious man who makes her heart race. She believed him to be a figment of her imagination—until she spotted his photo in a colleague's playlist. It turns out that Pyotr is a successful musician. Zhenya resolves to track down the stranger from her dream.