1784 In France, there is a fashion for freethinking, hairstyles with cabbage and turnips on the head, a fascination with Mesmer's animal magnetism and a thirst for entertainment. Etienne Montgolfier, together with his brother, is going to launch a balloon, the “ark of the future”, at which the king, queen and all their countless entourage come to marvel. The young Count Mirabeau is also present at this significant event. He calls Mesmer a charlatan, considering the main magnetism of a person to be personal willpower. The flighty son of his era, Mirabeau lived uncontrollably and recklessly. Endless conflicts with his father, an unsuccessful marriage, duels, imprisonment in the Chateau d'If, running away with someone else's wife and a death sentence commuted to a new prison sentence, pardon and return to Paris. Here, in this hotbed of freethinking, Mirabeau awaits new hobbies and passionate thoughts about freedom, equality, fraternity, which will come to life and be taken away.