King Alfred falls ill as the Viking army seizes the high ground. Ingrid curses Erik. Ubbe and his people find a new world — but they’re not alone.

Ubbe and his followers languish on the open sea. Ivar and Hvitserk receive a frosty reception in Kattegat, until a restless Ivar has a revelation.

As his enemies scheme for power, Harald prepares for his coronation and chooses a queen. Ubbe’s party reaches shore — but not the one they’re seeking.

Ubbe persuades the settlers in Iceland to embark on a voyage of exploration. The defeat of the Rus creates power vacuums in both Kattegat and Kiev.

A sense of doom looms over Kattegat as bloodshed ensues. The defeated army flees in the face of the victors. A legendary warrior makes his way home.

Ragnar and Ivar plot against the Saxons and reach a new level of understanding.