From the first minutes after his inauguration, the newly elected president wants to translate his promises and his campaign project into action. “Change is now”, “Change life”, “Together everything becomes possible”: all campaign slogans promising a break with the past, a change. The first few months were decisive: it was a matter of making a mark, asserting one’s style, imposing one’s authority and taking the first measures, those that would make a mark on public opinion and set the first lines of the political narrative in history. From 1959 to 2017, the eight successive presidents have acted without delay. Thanks to the many witnesses and actors of these first hundred days, the film retraces the stakes and decisive moments that marked the beginning of each mandate.