Ferchaux, a rich and powerful businessman, becomes the target of an investigating judge convinced of his involvement in a huge political and financial scandal. To obtain Ferchaux's confession, the judge throws his brother and partner in jail. Very attached to Gilles, whom he has always protected, Ferchaux fights to obtain his release. To get out, the businessman enlists the services of Mike Maudet, an ambitious and determined young man, who becomes his driver and then his private secretary.