 Fernando and Francisco, the brothers of the title, are in love with Felisarda and Jacinta, the niece and daughter of Don Carlos.But the Don will not favor Francisco, a second son with no patrimony, for his daughter; and so, to fool the old man, the brothers pretend to love the other brother's love.Don Carlos's son Luys comes home from the university with a friend named Alberto, a potential suitor for Jacinta's hand; and the Don favors the young student.