Polina Belenkaya

A large family gather to celebrate a birthday. It would seem like a great reason to get together. But the family is just a project of one of the "brothers" — an experienced psychologist who is conducting an experiment to create a "happiness formula". He believes that manipulating others, their emotions and desires, will make them happy. However, love interferes with the mathematical calculations, which can neither be calculated nor predicted.

The series is set in the Russian Empire during the second half of the 19th century, against the backdrop of social upheaval and the Russo-Turkish War. At the heart of the story is the romance between Sofya, a student at the Institute for Noble Young Ladies, and the married Count Vorontsov.