Middle-aged Napa Valley grape-grower Tony posts a marriage proposal to San Francisco waitress Lena enclosing a photo of his handsome younger brother Buck. When she gets there she overlooks his duplicity and marries him. Then she falls in love with Buck.
While building an irrigation system for a Southwestern desert community, an engineer vies with a local cowboy for the affections of a rancher's daughter.
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.