Original air date: 02/19/2015 Runtime: 45:10 min. Ragnar and Lagertha's fleets depart Kattegat once more for Wessex and this time they bring a group to colonize there. King Ecbert hosts the Norsemen and proposes a deal. Despite the misgivings of some of the other leaders, Ragnar leads his forces into battle once more, but this time as allies of Wessex.
Original air date: 03/05/2015 Runtime: 44:11 min. King Ecbert visits the developing Viking settlement as the first harvest is sown and rebuffs criticism from his leading nobles. The Wessex/Viking forces charge into battle with Mercia. In Kattegat, Harbard arrives in to the Great Hall and his mysterious aura fascinates Aslaug and Helga but Siggy remains suspicious.There are strange and tragic happenings in Kattegat and Siggy suspects Harbard is the cause.
Original air date: 03/12/2015 Runtime: 44:11 min. The victorious Wessex/Viking forces return to Wessex but there is rancour in the Viking camp - Floki is angry over the alliance with Ecbert and is resentful the influence that he feels Athelstan has over Ragnar. Princess Kwenthrith makes some calculating political moves following the battle at the Hill of the Ash in Mercia. Visitors from the past arrive in Hederby, at Kalf’s invitation.
Original air date: 03/19/2015 Runtime: 44:12 min. The fleet returns to Kattegat to find tragic circumstances await. Lagertha learns that her Earldom has been usurped and convinces Ragnar to travel to Hederby with her in an effort to reclaim her title. Ragnar causes great surprise when he announces the next raid. The Seer has interesting prophecies for Rollo.
Original air date: 03/26/2015 Runtime: 44:11 min. Preparations for the Paris raid pick up pace, and Rollo ponders the Seer’s prophecy about his destiny. Kalf arrives in Kattegat to join the raid and the Viking fleet sails up the Seine and catches sight of Paris for the first time. Porunn and Judith both deliver children, and with new life there is also death.
Original air date: 04/02/2015 Runtime: 44:12 min. The appearance of the Viking fleet causes panic among the population of Paris. The Emperor Charles, urged by his daughter Gisla, announces in Court he will remain in the city. The defence of Paris is in the hands of its Commander, Count Odo, who hopes that a heroic victory against the Vikings will gain him Gisla’s hand in marriage. The Vikings establish camp downriver from the city and plan their attack.