In the Venetian Republic a series of murders are carried out by a hooded man in black who always makes his escape through the city's waterways on a gondola.

Clotilde, wife of lawyer Giulio has just returned from an extramarital affair that ended badly: the only bond she still has with her husband is the hope of finding their daughter. The house is bursting with gossip and rumors. One day comes news about their daughter.

Young aviatrix Lyda spurns the advances of the Prince of Sèvre and falls in love with journalist Mario, who, although engaged to Cesarina, goes to Lyda's home. Cesarina sees them and manages to persuade Mario to leave Lyda.

Grand Duchy of Wallenstein. Elsa Holbein is the young beautiful daughter of General Julius, the Chief of the General Staff. After a spy named Moise Sthar steals military documents, Julius is accused of betrayal. He kills himself while Elsa is forced to leave. Homeless, she begins wandering the streets until, on the Riviera, she starts her performing career under the pseudonym of Diana Cadouleur and becomes a successful actress and singer. One day, in a small church, she meets an elegant young man and she falls in love with him. But during a tour on the Lucarno Lake she runs into Sthar who, rejected by Elena, spreads rumors about Prince Massimiliano’s behavior.

Luis Gelán, a world-famous boxer known for his rapid and glorious career, nicknamed the Bull of the Pampas, who left boxing for love of his wife Isabel, lives with them at the Los Sauces ranch. Meanwhile, Bob Jackson, his former sparring partner, also retired, awaits the opportunity when Gelán returns to the ring and needs him. It is then that his sick son needs medication, and he decides to return to boxing.

A 1924 film.

This featurette is a burlesque of the Moliere play, The Doctor In Spite of Himself.