A beautiful woman, fatally ill of the heart, is torn between the love of a poor sculptor and a forced marriage with the sadistic son of a millionaire.
Cantinflas is a unique barber, who trades with an elderly neighbor, a lawyer by profession, laws lessons in exchange for haircuts and shaved. It proposes advice to defend in court the disadvantaged neighborhood. His success deputy seeks the votes as the other candidate, Don Próculo, it is not accepted by anyone but his own bodyguards. Don Próculo will use know how much ruse to win the election by the Council, and also for the love of 'Sarita'
A young woman travels with her uncle to the city, there she works with a singer who she will have to replace. Later, she goes blind.
During a conversation between a grandfather and his grandson, the latter tells him the story of the liberator General José de San Martín (1778-1850) from the patriot's childhood, through his stay in Spain, his return to the Río de la Plata, the development of the continental plan and the European exile.