The boyfriend (Cantinflas) of the servant of a rich industrial man, gets into
the house in order to kill a mad dog. Suddenly this man appears so the servant
tells him that Cantinflas is his wife's brother (Leonardo), who had been lost
for years. The rich man then remembers that his father in law's testament could
only be paid when all brothers get together, so treats Cantinflas, a real bum,
as a king.