The Vikings are back home, where Bjorn orders Floki arrested for the murder of Athelstan. Count Kalf of Hedeby proclaims he'll rule it jointly with comrade in arms Lagertha, leading to a bloody confrontation with schemer Einar who overthrew her in his favor, where Horik's heir Erlund swings the balance in Kalf's favor. After fever-nightmarish weeks, Ragnar comes trough but scolds Bjorn for forcing him to order Floki executed. Bjorn leaves to test himself at wilderness endurance, shortly afterward Floki escapes. In Paris, Rollo, whom Bjorn left in command, again disapproved by Ragnar, despite total lack of command of Frankish language or culture, converts to Catholicism and weds an unwilling princess. When loyal Eirik warns Rollo the men grow discontent with what starts to look like treason, Rolle surprises the camp with a Frankish army.
—KGF Vissers