Catherine travels to Russia to marry the Emperor. After becoming Empress, she realizes Peter is a selfish brat. She feels hopeless until her servant, Marial, suggests they overthrow him.
After his near-death experience, Peter is now open to Catherine's progressive ideas and wants to focus on an heir. Orlo tries to figure out who poisoned Peter and faces demons of his own.
Catherine is feeling optimistic, until a smallpox breakout causes Peter to revert back to his old ways. Meanwhile, Leo and Catherine's relationship suffers and Georgina misses Peter.
Catherine's political abilities are tested when she's given an opportunity to travel abroad. Leo wants to leave court. Marial tries to keep him there by telling him about the coup.
A body is discovered. Peter decides to torture everyone at the palace to find the murderous traitors. Marial confides in Archie about Catherine's plans. Catherine has a life changing revelation.
Catherine moves forward with the coup. Marial betrays her by revealing a secret. Catherine realizes that the only chance for a greater Russia is to fight, no matter the sacrifices.
