Cantinflas, a traveling photographer, is captured by some gangsters while trying to get some flowers for his girlfriend. The gangsters have confused him with the assistant of Dr. Penongo, a scientist who has discovered the formula of a new atomic bomb. Meanwhile, Penongo has suffered a car accident and has lost his memory ...
| Actor | Role |
|---|---|
 CantinflasCantinflas | Cantinflas |
 Rosita ArenasChelito | Chelito |
 Ángel GarasaRaúl Penagos | Raúl Penagos |
 Rebeca IturbideDiana Alvírez | Diana Alvírez |
 Fernando WagnerLeader of the villains | Leader of the villains |
 Julio VillarrealRoberto Alvírez | Roberto Alvírez |
 Wolf RuvinskisLepka | Lepka |
 José PidalDoctor Saldívar | Doctor Saldívar |
 Beatriz RamosEnfermera de Dr. Saldívar | Enfermera de Dr. Saldívar |
| EEduardo AlcarazCoronel | Coronel |
 Conchita Gentil ArcosMamá de Chelito | Mamá de Chelito |
 Salvador QuirozDon Ole | Don Ole |
| MMaría HerreroAna María Méndez | Ana María Méndez |
| HHéctor MateosPablo, mayordomo | Pablo, mayordomo |
 Pedro ElviroNovio fotografiado | Novio fotografiado |