Basil, sent to a West Indian island to look after his brother's interests, so antagonizes the planters that they form a secret organization for the purpose of throwing off the Harcourt yoke. Irene, who has just inherited her father's plantation, refuses to join. Basil is later slain under circumstances which cause Irene to believe herself the murderess. To keep the crime secret, the girl becomes a member of the order and vows to do its bidding. Shortly afterward, she leaves for America. There the girl meets Sir Henry, who is traveling under an assumed name. The two fall in love. Blake, the head of the organization, comes to America. Irene's dream of happiness is shattered when Blake recognizes her lover. The girl is ordered to lure Sir Henry to her apartment, where, after being drugged by her, he is to be slain by Blake. Rendered almost insane by what has transpired, Irene resolves to die in her sweetheart's stead. Cara, Irene's West Indian maid, learns what is afoot and summons Sir Henry. The two arrive at Irene's apartment just as Blake is about to stab a figure, lying crouched over the table. Leaping forward, Cara receives the knife in her own breast. Blake flees. Dying, Cara confesses that she had killed Basil because the latter, after making love to her aroused her jealousy by paying attention to Irene.