Cantinflas, the partner of the slave of a rich industrial guy, enters into the house in order to eliminate a crazy dog. Unexpectedly this man shows up so the slave informs him that Cantinflas is his wife's bro (Leonardo), who had been lost for several years. The rich man after that remembers that his daddy in regulation's testament might only be paid when all siblings get together, so deals with Cantinflas, an actual bum, as a king.