As a young man Arak joins the Vikings on their raids. They consist mostly of raiding monasteries for treasure, including a huge gold bejeweled cross which the captain hangs upside down on the mast as a good luck hammer of thunder. Near the end of the first issue, a sea serpent sent by the sorceress Angelica attacks the Vikings and some monks.
Arak, still in his youth, joins the Viking warriors on their campaigns of conquest. Their main objective is to plunder monasteries for valuable treasures, including an impressive golden cross that the captain displays as a token of good luck. As the story unfolds, a sea serpent, dispatched by the sorceress Angelica, launches a surprise attack on the Vikings and some of the monks.