Andrei and Marina are married for 7 years and they feel there is no more love. They ask a famous doctor to help them, and he helps... by putting their minds into the bodies of each other. Now Andrei is in his wife's head, so he lives the life of his own wife, who runs an art gallery, and Marina in the body of Andrei becomes a lawyer...

Europe, 1709. Russia and Sweden are at war. Two French duelists are exiled by King Louis XIV of France: one to the side of Czar Peter the Great of Russia, the other to the side of King Charles XII of Sweden. Although separated by war and allegiance, fate has not finished with them.

The heroine, a lonely woman, falls in love with a young businessman very similar to a childhood friend. Everything separates them, the age difference, the social position and this creates a multitude of obstacles, sad or ridiculous, to the realization of their aspirations. But how to imagine that this man, who was trying at the beginning to get rid of an intruder, comes to a declaration of love accompanied by flowers.

Inga is a single mother. She is raising her eight-year-old son Kostya and dreams of finding him a good father. Until a certain point, all her attempts end in failure, bringing only disappointment. But then one day, she meets cardiac surgeon Andrei and falls madly in love with him. After sending the boy to the countryside for a while, Inga prepares for the wedding. Meanwhile, Andrei not only cares for his bride, but also does everything he can to rightfully call her son his own. On the wedding day, he presents his beloved with an adoption certificate. The happy newlyweds drive to the village to pick up the baby from his aunt, but get into an accident. Inga dies on the spot, and Andrei is left alone with his grief. Now he must decide the fate of the child and become—or not become—his real father.