Гусар

Having returned back in time, Grigory Rylsky tries to find his wife, who is supposed to be Katya's ancestor. The search has to be stopped because of an important state assignment: Rylsky has to deliver the diamond "Tear of Siberia" to the Austrian Emperor. During the journey, things do not go according to plan, and Grigory again has to go to the future.

Hussar hides from the Zhuravlevs the true purpose of his visit. Having deceived his friends, the guest from the past takes Kostya as an accomplice and plans to steal the diamond brought to Moscow by a descendant of Ratford.

To get to the diamond, Rylsky tries to charm Nastya, an employee of the Diamond Fund. But Ratford also has his sights on the pretty assistant. Meanwhile, Mitya tries to solve the family's financial problems.

Katya and Mitya can't decide who should earn money and who should take care of the child.  No one wants to give in, so Rylsky becomes the babysitter for a while.

Gusar plans to conquer Nastya at a social event. Meanwhile, Katya learns that Mitya secretly flew from her to the past. The girl intends to find out the details of the trip.

Because of Mitya's irresponsibility, Katya is forced to take the baby with her to work. Hussar finally achieved a long-awaited meeting with Nastya, after which he intends to take their relationship to a new level. Except that the girl has her own plans.

Mitya decides that Rylsky has been cured of his melancholy, which means it's time to send him back in time. After all, the guy doesn't know what changes in reality Grigory's early return to his own time can lead to.

Gusar is about to tell Nastya about his feelings, but his plans are disrupted by Kostya. Mitya and Katya do not see what is going on under their noses because they are trying to cope with the baby and get some sleep.

Nastya's career is in jeopardy: Ratford wants to shut down the exhibition and return to London. Gusar is going to stop him. Mitya tries to prove to Katya that he is capable of making independent decisions.

Katya begins to suspect that Rylsky is hiding something. Gusar asks Kostya to cover for him from the Zhuravlevs, and he goes on his first date with Nastya.

Hussar's plan worked: The Zhuravlevs think he has gone back in time. Meanwhile, Nastya accidentally sees Rylsky with Katya and the baby and decides that it is his family.

Gusar is moping because of Nastya. Mitya and Katya decide to frame the girl and show Rylsky a photo where she is in the arms of a famous singer. The man is shocked and plans to take revenge on his rival.

Rylsky intends to forget Nastya completely, steal the diamond and travel back in time. Everything in his plan has been thought out, except for the little things - FSB officers, unpredictable Kostya and Mitya's time paradoxes.

Mitya has figured out how to return Gusar to the past without breaking the space-time continuum. But to do this, he and Katya need to get into Ratford's hotel room, and Rylsky needs to stay at home.

Mitya tries to understand where Katya has disappeared to. Together with Nastya, he travels back in time to find Gusar and find out what happened.

Season finale! The Zhuravlevs are preparing for the wedding of Nastya and Grigory. Unexpectedly, Ratford and Dog from the new reality appear on their doorstep, forcing Mitya to move an enemy from the past. Hussar and Nastya need to figure out how to save their friends, and at the same time the whole world.