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.

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.