Wolf in the night

Bjarni was a side by the son of a noble man and a slave, but on one winter night he became the only heir to his father. The same man killed his two brothers - Thorvard, the young Konung Fjullenland, who lives under the oppression of curses and sowing destruction around him.
Having become a rich heir, Bjarni got up to Ingebierg, the best bride in the district, but she refused a marriage with her son of a slave. Bjarni decides to go to the green islands from where his mother was brought from, and find evidence of his royal origin there.
But Torvard also goes there: the curse of Erkhina, the mistress of the sacred island of Tual, does not give him rest, forces him to forever look for feats in order to break the evil fate - or die