Centuries ago, in what would become the Canadian Arctic, Atuat is promised to the malevolent Oki, son of the leader of their tribe. But Atuat loves the good-natured Atanarjuat, who ultimately finds a way to marry her. Oki's sister, Puja also fancies Atanarjuat, and when she causes strife between him and his brother Amaqjuaq, Oki seizes the opportunity to wreak a terrible revenge on Atanarjuat.