Catherine, Orlo and Marial continue their coup planning. They try to recruit an unhappy military general, Velementov, for their cause during palace celebrations honoring Peter’s late father, Peter the Great. Peter, noting Catherine’s unhappiness at court, gifts Catherine a sterile lover, Leo. She’s hesitant at first, but Leo manages to charm her.

Tensions mount as Catherine, Orlo, Velementov, Leo, and Marial try to get regional counts on board with the coup. A few of the men end up killed. When a body is discovered later, Peter decides to torture everyone at the palace to find the murderous traitors. Marial buckles under the pressure and confides in Archie about Catherine’s plans. Catherine realizes she is pregnant.

Catherine’s decides to move forward with the coup on her birthday. Peter isn’t so easily overcome and holds Leo hostage as collateral. In exchange for a return to her status, Marial betrays Catherine to Peter and tells him that she is pregnant. Catherine realizes that the only chance for a greater Russia is to fight, without Leo. The battle begins.