In the end of the 18th century in Russia, Count Lef Fyodor and his wife, Anna, great opera singer, were shot to death because Count Fyodor protested against the tzar. Their daughter Rosalinda grows up as a farmer couple's daughter.

Rosalinda is discovered as the daughter of count Fyodor by the cossack Adrian and she eventually departs for Saint Petersburg, where the tzar is being threatened by a group whose leader is called "Black Hawk".