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.
| Actor | Role |
|---|---|
 André RoanneNot listed | Not listed |
 MusidoraNot listed | Not listed |
| KKitty HottNot listed | Not listed |
 René PoyenNot listed | Not listed |