Choose your rewatch

Ragnar's crew crosses the sea and attacks Lindisfarne, bringing Athelstan into their story.

At Uppsala, religious belonging becomes a life-or-death question for Athelstan, while Ragnar seeks Horik's support.

News from Kattegat interrupts Ragnar's meeting with Ecbert; Athelstan remains in England and faces a religious reckoning.

Athelstan renews his Christian commitment; Floki kills him, leaving Ragnar to confront an intimate and spiritual loss.

Ragnar uses a private farewell to redirect Ivar’s vengeance toward Ecbert. His transfer to Northumbria ends with torture and execution, turning the father’s final choices into his sons’ next conflict.

Lagertha kills Knut during the English raid, and the resulting accusation puts Ragnar before a hostile assembly.

Rollo's betrayal reaches the battlefield, while Aslaug's arrival forces a decision about Ragnar and Lagertha's marriage.

Horik proposes renewing ties with Borg, while Lagertha confronts Sigvard and Athelstan becomes valuable to Ecbert.

Ragnar and Horik dispute Borg's fate as Lagertha returns in a position of independent authority.

Aslaug’s surrender does not secure her survival. In Wessex, Ragnar and Ecbert revisit their shared history and negotiate an arrangement that gives Ivar a route home.

Harald wins the Norwegian crown as Lagertha wins her village’s battle. Her subsequent journey to Kattegat ends with Hvitserk fatally mistaking her for the enemy haunting him.

Ragnar uses a private farewell to redirect Ivar’s vengeance toward Ecbert. His transfer to Northumbria ends with torture and execution, turning the father’s final choices into his sons’ next conflict.

Kattegat’s defenses face the attack prepared in Harald’s interest. In England, Ivar argues for exploiting terrain rather than meeting the Saxons on terms chosen only by expectation or pride.

Ivar’s forces repel the Saxon assault on York. Ubbe and Hvitserk then seek an agreement with Aethelwulf, only to be humiliated in the Saxon camp. Ubbe decides to return to Kattegat. At the departure, Hvitserk changes course and stays with Ivar. Elsewhere, Floki explores his new land and Astrid resists Harald’s advances.

Bjorn’s attack on Kattegat is aided by Freydis, who turns against Ivar. Ivar kills her and escapes after losing the city. Magnus dies during the fighting. Harald helps Bjorn, whose eventual victory brings Lagertha back with the sword of kings. Bjorn is proclaimed king while Ivar’s departure leaves their conflict unfinished.

Oleg’s rule ends, and Ivar leaves Rus after an emotional farewell. Greenland collapses into violence, while Gunnhild refuses the political future Harald offers her.

Ivar’s final battle ends in death, Hvitserk accepts a new faith and name, and Ubbe faces the first serious test of coexistence in the land where he has found Floki.

The fleet reaches Paris, where both sides prepare for a siege and Ragnar puts Floki in charge of the attack.

The coordinated assault on Paris fails, leaving the Norse wounded and Floki's confidence in his judgment shaken.

Another assault fails, and a gravely weakened Ragnar seeks baptism and burial inside Paris as the defenders consider terms.

Ragnar's apparent funeral becomes the means of entering Paris, while Rollo receives an offer that could transform his future.

Rollo’s river defenses defeat the first assault. The Vikings discover that danger at the camp has continued while they were fighting, and Ragnar faces increasing demands for a workable plan.

Ragnar proposes moving the ships overland around the forts. His tactical invention sits beside personal violence and political removals that make this an unusually consequential episode away from the battlefield.

The brothers meet in a costly river battle that ends in Frankish victory. A major time jump then reveals a transformed Kattegat and a family ready to question Ragnar’s legacy.

Ragnar proposes a western voyage against his ruler's wishes, while Floki's ship makes the idea practical.

Athelstan renews his Christian commitment; Floki kills him, leaving Ragnar to confront an intimate and spiritual loss.

Bjorn and Halfdan return to Kattegat and commit themselves to Lagertha. Bjorn proposes marriage to Snaefrid. Floki’s settlers reach Iceland, where questions of how the community should be governed appear early. Alfred visits Lindisfarne, while the expected attack puts Lagertha’s preparations under a deadline marked by the full moon.

Ivar’s sacrificial spectacle uses a woman presented as Lagertha, and he later kills the Seer. Hvitserk’s search for guidance cannot give him an easy way out. In Wessex, a coup against Alfred stalls when Aethelred backs away. Floki responds to Thorunn’s murder by asserting authority and banishing Eyvind’s family.

Ubbe defeats Frodo in single combat and speaks about his return to his former gods. Floki finds Christian objects in a cave before an eruption traps him. Judith dies. Lagertha prepares to put down her weapons, while Bjorn and Harald’s fleet suffers in a storm and their rivalry produces another confrontation.

Ivar’s final battle ends in death, Hvitserk accepts a new faith and name, and Ubbe faces the first serious test of coexistence in the land where he has found Floki.