Pierre risks being taken advantage of by an agency that sets up financial scams, he escapes thanks to Marcelle, the secretary of the director of the agency, who is a childhood friend. She does her best to keep the young man away from the scams of his boss. However, the director, in love with Marcelle and jealous of Pierre, succeeds in trapping and ruining him. Marcelle will then denounce him to the police, but before being arrested he will kill her.