Catherine tries to manage her reputation at court and her relationship with Leo, both of which distract her from the coup. Meanwhile, the influential Patriarch of the church dies, and a new one must be chosen. Orlo sees an opportunity to try and influence Peter in the decision, and Archie makes moves.
Peter has a new lease on life after his near-death experience. He is open to Catherine’s progressive ideas of introducing art and science to court and wants to focus on an heir. Orlo tries to figure out who poisoned Peter and faces demons of his own.
Catherine’s political abilities are tested when she’s given an opportunity to travel abroad with Peter and Velementov to discuss ending the war with Swedish king. Velementov finally sees the potential of her leadership and decides to support the coup. Back at the palace, Leo wants to leave court. Marial tries to keep him there by telling him about the coup.
Catherine feels optimistic about peaceful coexistence with Peter and their increasing chemistry. When smallpox breaks out in the servant’s quarters, however, Peter reverts to his old ways. Meanwhile, Leo and Catherine’s relationship suffers and Georgina misses Peter.
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.
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 takes her first steps toward a coup. Taking advice from Marial, she attempts to seduce and recruit palace intellectual Count Orlo. It’s a disaster. However, after seeing Peter’s brutal treatment of local nobles and unwillingness to listen, he decides to join Catherine’s coup.
Andy and Klein explore two last-ditch efforts to prove Jacob's innocence.
The discovery of a body believed to be her brother leads Zoe Walker to Ibiza, where she reconnects with his old friend Marcus, a DJ and drug dealer.
Zoe and Boxer run into trouble with the police, but their actions spark even bigger problems for Marcus. Oriol pushes hard for closure on Axel's murder.
Zoe’s trial date arrives. David hits a snag in his efforts to help Oriol with psychedelics. Clint's investigative tactics cross a line.
Hurtful revelations and a brutal injury create fractures within the Calafat family. Zoe's emotional state drives her to make some impulsive decisions.
After Axel's memorial service, a frustrated Zoe makes a bold move to force Marcus to come clean. Kika returns home when Andreu suffers a loss.
The strain on Zoe's marriage intensifies. When David hosts a reunion dinner with the crew, old tensions boil over, pushing Marcus to the brink.
Oriol's attempts to forge better communication within his family yield more honesty than expected. Zoe embarks on another frantic search.
On Anna's wedding day, Marcus's actions come back to haunt him. After suffering yet another loss, Zoe vows to finally figure out who killed Axel.
Zoe learns about Axel's darker side, then helps Marcus with a messy situation. At a contentious board meeting, Andreu makes a big announcement.
Tensions between the Calafat and Martínez families reignite in the wake of Oriol's ambush on Cristóbal. Zoe gets a surprise visitor in Ibiza.
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