Lagertha in Norway and Aethelwulf in Wessex consider the consequences of Ragnar's death, while his sons start to plan their revenge.
Lagertha orders defences to be built around Kattegat. Ivar challenges Lagertha to single combat, but is refused, and promises that he will kill Lagertha one day.
Meanwhile, Bjorn and Rollo reach Spain, and raid Algeciras, as Halfdan and Harald start plotting to overthrow the Lothbroks as part of their conquest of all of Norway.
Floki is intrigued by his first contact with Islam and forces the Vikings to spare men praying in a mosque.
After Floki refuses to have another child with Helga, Helga adopts a Moorish child, Tanaruz, as her daughter.
The man in the black cloak – an incarnation of the god Odin – brings news of Ragnar's death to his sons.
The Seer tells Lagertha he foresees that she will be killed by one of Ragnar's sons, while Ivar prepares a new sword and dreams of his revenge.