After receiving her new name, Ekaterina is baptised and prepares for her wedding to Pyotr. Little does she know the affairs of her mother begin to jeopardize her chances of remaining safe and prosperous in Russia.

Frederica becomes more and more accustomed to life in the palace. She spends as much time as she can getting to know her fiancé, Pyotr, and trying to win his favor. Some members of the court are displeased with her and try to take matters into their own hands.

Princess Frederica arrives in Russia. She is fascinated by Pyotr Fedorovich, learns Russian, admires Elizabeth's generosity and does not suspect that she is the object of close attention of Count Shuvalov's bloodhounds. Elizabeth leaves for a distant monastery, but is forced to urgently return to St. Petersburg. A terrible thing happened ...