Unjustly accused of theft, the noble Raimundo is forced to leave his paternal home. A new incident, caused by the ambition of his brother José, causes Raimundo to be disowned by his girlfriend María and by his father, the just and strict Don Pepe. The only one who believes in Raimundo is his mother, Dona Lupita, a woman who suffers deeply because of the wrong decisions of her children.