A hawker, pursued by the law, finds refuge in a garage and finds there a former comrade who has become a mechanic. As he looks like a car driver, he finds himself forced to sit behind the wheel of a car to participate in a race, but not knowing how to drive, he finds himself dead last.
Pierrot et Pierrette, brother and sister, live in a caravan with their grandfather, the former ringmaster of a circus. To earn a living, they sing in the streets, and their lives are happy. But a charitable lady interferes, determined to put grandfather in an old folks' home and the children in an orphanage. Pierrot and Pierrette run away, and fall into the hands of a travelling vendor who wants to use them for burglaries.
When an unscrupulous banker ruins his family, a young man swears to bring him to justice, so he adopts a new identity, the mysterious Judex, and ominously disguised and sunk into the muddy path of vengeance, punishes the crooks and protects the innocents. (Originally a twelve-part epic serial.)
The famous scientific detective Justin Crécelle and his faithful assistant Walter Jymson seek to halt the deeds of the "Clutching Foot" gang, who attempt to kidnap Hélène, the fiancée of Justin, in both possible and ridiculous ways. The film is a spoof of the Les Vampires serials, with Musidora appearing in one episode in costume.
Paris is prey to an invisible terror against which the police can do nothing: a sinister organization that sows chaos and death. The intrepid journalist Philippe Guérande and his partner embark on a long crusade to put an end to the crimes of the Great Vampire and Irma Vep, his dangerous accomplice. (A ten episode movie serial.)