The mistress of the wealthy Henri Marcoux is murdered and the family accuses the milkman of committing the crime. But Marcoux's daughter's fiancé suspects that she may have been murdered by someone else.
Young provincial Charles arrives in Paris to stay with his cousin Paul while studying law. Paul is a decadent, bohemian pleasure-seeker who shows the meek, diligent Charles the thrills of city life. When Charles falls for Florence, one of Paul's acquaintances, relationships begin to shift.
A young man becomes enraged when his mother remarries his wealthy uncle after his father dies.
