Lagertha and Athelstan help to set up the Viking settlement; a mysterious wanderer turns up.

King Ecbert visits the developing Viking settlement as the first harvest is sown.

There is bitterness in the camp, Floki is angry over the alliance with Ecbert.

The fleet returns to Kattegat to discover tragic circumstances await.

Preparations for the Paris raid pick up speed, and Rollo thinks about the Seer's prophecy.

The Viking fleet causes panic in Paris; the Emperor Charles declares he will remain in the city.

The Viking army sets out and Paris goes into lockdown as the army prepares the defense.

The Vikings hit Paris with a second assault; Emperor Charles has to make a difficult decision.

With one last chance to take Paris, Ragnar and his Viking troops take a daring chance. Ragnar asks Bjorn for a favor that could change the course of Viking history.