Ahmed, son of Diana and Sheik Ahmed Ben Hassan, falls in love with Yasmin, a dancing girl who fronts her father’s gang of mountebanks. She and Ahmed meet secretly until one night when her father and the gang capture the son of the sheik, torture him, and hold him for ransom.

Vladimir Dubrouvsky, a lieutenant in the Russian army, catches the eye of Czarina Catherine II. He spurns her advances and flees, and she puts out a warrant for his arrest, dead or alive. Vladimir learns that his father’s lands have been taken by the evil Kyrilla Troekouroff, and his father dies. He dons a black mask, and becomes the outlaw The Black Eagle. He enters the Troekouroff household disguised as a French instructor for Kyrilla’s daughter Mascha. He is after vengeance, but instead falls in love with Mascha.