Cantinflas is a clumsy fireman, who one day receives the visit of his little goddaughter, whose mother recently died in the jungle. After having work in a few fires, Cantinflas decided to quit and become a policeman, because is less dangerous. Everything goes well until a gang of gangsters kidnap the girl, because of a monetary inheritance.

Cantinflas
as Agente 777

Roberto Soto
as Comandante Bravo

Gilberto González
as El Piquete

Elisa Quintanilla
as Rosario

Miguel Manzano
as Jefe bomberos

Pascual García Peña
as El chueco

Ernesto Finance
as Licenciado / notario

Jorge Mondragón
as Silverio

Eduardo Alcaraz
as Sargento Policía

Ángel Infante
as Policia