The unprecedented cancellation of the presidential election by the Constitutional Council causes an unprecedented explosion. The organization of new elections in a very short time frame pushes Philippe to run. But Mercier has managed to win over a large majority, to the point of bringing together apparent opposites. One after another, the barriers fall in record time, until the last one is threatened: democracy.

Although Philippe has withdrawn from the presidential race, he has not given up and expects to be appointed Prime Minister by Amélie. His entourage is concerned about his mental health, as this scenario seems highly unlikely. But just as victory seems assured for the outgoing president, a butterfly flapping its wings on the other side of the Rhine will cause a political tsunami that will reshuffle the deck.

Amélie surprises everyone by announcing a referendum aimed at modernizing the institutions of the Fifth Republic. Disappointed by Vidal's decision to vote No, Philippe declares war on him by positioning himself in favor of Yes and calls for an internal vote to settle the controversy, and above all to build his faction. Vidal proposes that the vote take place after a debate between the two men, a veritable duel tailored to his advantage.

After calling for unity among the left following violent clashes at polling stations, Philippe hits the road to convince people that he can bring them together. While Amélie has clearly given up on running again, Philippe is determined to unite the left during his political marriage, but Vidal refuses to give in to blackmail, preferring to flirt with the anti-establishment Mercier.

Too hampered by the moribund state of the PS, Philippe joined Michel Vidal's Debout le Peuple (Stand Up, People) party. This is actually an old tactic: entryism. With regional elections looming in Hauts-de-France, Philippe sees a golden opportunity to apply his strategy of uniting the left against Vidal's will. Philippe pulls the strings in all camps. But Vidal is not fooled by his double game.

A riot breaks out in reaction to Mourad Adjaoui's disappearance. Vidal takes advantage of Amélie's enormous political crisis to shatter Philippe's dream by eliminating the possibility of a union within the left party once and for all. Under these dramatic circumstances, Philippe makes the decision to renew contact with Amélie.

Rejected by Véro, who remains loyal to Vidal, Philippe is unable to implement his strategy of entryism. During a trip to Spain, Vidal alternates between humiliation and seduction to recruit him and make him give up his ambitions for the Élysée. Amélie fails in her attempt to set up a Green New Deal with Germany due to revelations about the chancellor's personal life.

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.

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...

While the elections take place, Rickwaert figures out Laugier's new strategy - he has sent his special advisor, Dorendeu, to help a Green candidate to hinder the far-right candidate's chances of retaining its Northern constituency.

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.

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 ...

Rickwaert leads a ruthless battle to maintain his position in Dunkirk and seems to be back on Laugier's side. Laugier stands up to the Germans over EU sanctions on the excessive deficit.

After an incriminating court document is released and the media gets hold of it, Rickwaert will risk anything to save his own back...