Carlos returns, after a long journey, to his father and two sisters. His sister has fallen in love with Eugene, Carlos' bitter enemy. A quarrel ensues between the two boys and ends with a duel in which Carlos falls a victim. When his lifeless body is brought into their tent the family take the oath of the vendetta which is pledged by a kiss, the fingers in the form of a cross. The father, being a cripple, it is incumbent upon the girl to avenge her brother's death, so taking up a dagger she starts out, ignorant of the identity of her brother's slayer. Judge her horror when she discovers it is her lover. In the terrible struggle between the two fires she cannot carry out her mission, and so her father, thinking the knife too terrible, suggests the poisoned cup. In this scene she endeavors to sacrifice herself by shifting the cups but her young sister seeing her actions, changes the cups back again to their former position and the lover pays the penalty.
Moving Picture World synopsis