Harald and younger brother Guntar return to Norway after a 10-year
        voyage to find their father murdered and his lands now ruled by the
        villainous Sveno. As part of his plan to rally the Vikings against
        this tyrant, Harald disguises himself as the Danish ambassador and
        enters Sveno's stronghold. There, he falls in love with Hilde,
        Sveno's cousin, who's been betrothed against her will to the Danish
        king. Harald must devise a new plan when Guntar is captured by Sveno
        and when the real Danish ambassador arrives on the scene.