In Iceland, Ubbe and Torvi finally meet a mysterious wanderer. Bjorn is forced to re-think who his enemies are when Erik returns from a scouting mission with worrying information. Bjorn will need allies, but can he convince his old foe, King Harald, to join forces in the face of the new threat? Ivar is reunited with someone close to him.

Cast: Alexander Ludwig, Alex Høgh Andersen, Marco Ilsø, Jordan Patrick Smith, Alicia Agneson, Kristy Dawn Dinsmore, Eric Johnson, Lucy Martin, Ferdia Walsh-Peelo, Andrei Claude, Lenn Kudrjawizki, Erik Madsen, Pellek, Ronan Summers