Arsenio Lupin is an audacious Parisian thief who mocks the police, especially Inspector Ganimard, but turns over most of his ill-gotten gains to charity. One night, he attends a party disguised as a newspaper writer who also mocks Ganimard; the next morning, the host's wife and a male guest are...
Neither he nor she are very handsome, not to say ugly, and how they would like to be good looking to give and receive compliments, and that someone loves them.
Bad guy who runs a ritzy nightclub is trying to keep his younger brother out of the gutter and get him into a professional career. Unknowingly, he takes up with his brother's fiancee. Also other complications.