From General de Gaulle to Emmanuel Macron, the eight presidents faced similar crises: General de Gaulle's return to power, Algerian independence, May 68, the death of Georges Pompidou, the Giscard-Chirac duel, the 1981 changeover, the first cohabitation, the Gulf War, Chirac's failed dissolution, the terrorist wave of 2015... Each president has dealt with them in his own style, but with the same Constitution. How did they used the powers at their disposal? Former prime ministers and three former presidents of the Republic, Valéry Giscard d'Estaing, François Hollande and Nicolas Sarkozy, have agreed to recount their experiences of power in times of crisis and to tell the story of those hours when everything can change.