The wretched king is forced to offer his daughter (Thora) to anyone who will slay them.

The hero (Ragnar) devises a dress of a peculiar kind (by help of his nurse, apparently), in this case, woolly mantle and hairy breeches all frozen and ice-covered to resist the venom, then strapping his spear to his hand, he encounters them boldly alone.

The courtiers hide "like frightened little girls", and the king betakes him to a "narrow shelter", an euphemism evidently of Saxo's, for the scene is comic.

The king comes forth when the hero is victorious, and laughing at his hairy legs, nick-names him Shaggy-breech, and bids him to the feast.

Ragnar fetches up his comrades, and apparently seeks out the frightened courtiers (no doubt with appropriate quip, omitted by Saxo, who hurries on), feasts, marries the king's daughter, and begets on her two fine sons.
Of somewhat similar type is the proud "Maiden guarded" by Beasts.