Plot summary
At Heahmund's suggestion, Lagertha, Bjorn, and Ubbe are to be allowed to settle in East Anglia in return for fighting against other Viking incursions. Heahmund is informed that his bishopric has been given to Cuthred, due to Heahmund being assumed dead. In Kattegat, Ivar is engaged to Freydis. When his impotence prevents him from having sex with her, Freydis consumes Ivar's blood, claiming this will make her conceive, but she then secretly has sex with Ivar's slave. In the colony, Frodi blames Eyvind's son Asbjorn for Thorgrim's death, while Floki tells Aud of his fear that his visions were due to insanity.
In Wessex, Alfred implores Ubbe to convert to Christianity. Meanwhile, Alfred ignores his intended bride Ealhswith, who starts an affair with Bjorn. Ivar has a disturbing dream involving Margrethe, and then has her killed. Cuthred's spies discover Lagertha and Heahmund's affair. When Cuthred confronts him and threatens to tell Alfred, Heahmund murders Cuthred.
Credits
Adapted from Wikipedia contributors, Vikings season 5. HTML formatting and reference markers removed.