Released from prison between the two rounds of the presidential election, yet still monitored by an electronic bracelet, Philippe Rickwaert attempts to convince socialist candidate Amélie Dorendeu to review her strategy. He wants her to strike an alliance with Michel Vidal, leader of the radical left party. But soon, the Baron Noir is overtaken by his own maneuvers, which threaten to weaken Dorendeu. They now run the risk of a National Front victory.

Philippe reunites with his former fiefdom: Dunkirk. In the midst of the legislative elections, he sows discord in his successor's campaign and succeeds in forcing a political compromise that would lead to his comeback as an elected politician.

Amélie faces her first political roadblock as she struggles to rally the legislative majority she needs to pass her key Health Act. At the same time, Cyril Balsan, a young member of parliament representing the suburbs, starts to fight against a proposed electoral communitarianism that he believes will benefit Islamists. While helping Amélie, Philippe realizes that his former assistant's struggle could give him the opportunity to get rid of a political enemy of his own. But a few socialist barons, furious at Cyril's accusations, decide to respond by jeopardizing the Health Act vote. Philippe ends up in an inextricable situation.

The parliamentary crisis reaches a new peak. Without an absolute majority, Amelie is more weakened than ever. Yet she refuses to resort to constitutional shortcuts in order to force her way through. Philippe sees the opportunity to persuade her to try the Left Alliance with Michel Vidal. In the meantime, the young President must handle the threat of a Jihadist attack. Facing this adversity transforms Amélie, hardening her resolve. She is determined to become the President she wants to be, according to her own criteria, at the risk of bringing chaos to her relationship with Philippe.

Abandoned by Amélie, ruined by his lawsuit, Philippe is in big trouble. At the same time, Amélie brings the socialist barons in line with an iron fist. She gives them no choice but to accept her offer: strike an alliance with the centrists. Refusing the defeat, Philippe undertakes a wild counteroffensive, seeking out a leader able to defy Amélie.

While Cyril imposes himself on the media circuit with a secular-focused political line, and Amélie triumphs with Thorigny as her new Prime Minister, Philippe must face judgment. With Laugier dead, Philippe knows that he will have to accept his responsibility for a corrupt system he did not take advantage of. This sense of injustice drives him to attempt a last-ditch effort and meet the Secretary-General of the Élysée.