The second ten episodes from the fourth season of the historical drama following the adventures of a Viking clan. The season follows Ragnar (Travis Fimmel), a Viking chieftain who, with help from his brother Rollo (Clive Standen) and wife Lagertha (Katheryn Winnick), plots to become king. A formidable warrior, Ragnar often leads his men on raids overseas. However, even as he makes a name for himself on the battlefield, Ragnar must be aware of rivals plotting behind his back in his homeland. The episodes are: 'The Outsider', 'The Vision', 'Two Journeys', 'In the Uncertain Hour Before the Morning', 'All His Angels', 'Crossings', 'The Great Army', 'Revenge', 'On the Eve' and 'The Reckoning'.