In Kiev, prince Oleg marries Katia and makes Ivar, whom she reminds of his Freya, watch them having sex. In Oleg's Vestfold, not Bjorn but Harald wins the election and is crowned first King of All Norway; Harald breaks his promises to various kings and earls for votes, like making Kjetill king of a new colony on Iceland. Kjetill warns Bjorn that Harald will try to eliminate his rival, they are cornered by Harald's men, but saved by the outlaw Erik, who takes them to his ship. White Hair's bandits latest attack on Lagertha's trapped village makes many victims, including him in a duel, which leaves her fatally wounded, so Lagertha rides back to Kattegat to see Ragnar's sons a last time, dragging herself toward the great hall, having a last vision of the Seer, until Hvitserk, hallucinating in addict delirium about Ivar as a serpent, attacks it, before realizing he actually slew Lagertha, who waives any guilt or regret.
—KGF Vissers