Episodes & seasons

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

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

Back in Kattegat, Ragnar chooses Athelstan from the spoils and prepares another English expedition.

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

Haraldson attacks Ragnar's home, forcing the wounded rebel to rely on the people around him.

Ragnar defeats Haraldson and becomes earl, then presides over the funeral of his former enemy.

Ragnar negotiates with Aelle while Lagertha governs at home; Rollo agrees to a politically useful baptism.

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

Ragnar's mission to Borg exposes divisions abroad while illness devastates the family at home.

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

Four years later, a renewed English expedition reaches Wessex as Ragnar's household and alliances take new forms.

Ragnar sees agricultural possibility in Wessex while Borg exploits the absence of Kattegat's fighting force.

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

Ragnar and Lagertha work together to retake Kattegat while Athelstan's place at Ecbert's court develops.

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.

Ivar is born, and a renewed voyage to Wessex exposes sharp disagreement between Ragnar and Horik.

Ecbert defeats the Norse force, then offers an arrangement based on land and military service rather than destruction.

Horik moves against Ragnar's household, only to discover that the loyalties he counted on were misleading.

Ragnar returns to Wessex for the promised land, but Ecbert makes military service part of the arrangement.

The Mercian campaign continues as a mysterious visitor appears in Kattegat after shared dreams about a stranger.

The Mercian battle costs Torstein his life and leaves Porunn badly injured, while Harbard unsettles Kattegat.

Siggy dies rescuing Aslaug's sons, while the victories in England leave new personal and political wounds.

The returning raiders face loss at home as Lagertha learns of Kalf's takeover and Ecbert betrays the settlement.

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

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.

Ragnar’s illness leaves others making decisions about loyalty, succession and punishment. Bjorn acts against Floki, while Rollo commits himself to his Frankish future.

Punishment tightens around Floki, while Bjorn endures the winter alone. In Wessex, Æthelwulf must turn Ecbert’s political objective into a dangerous rescue.

Separate visions of Athelstan bring Ragnar and Ecbert back to the same moral question. Bjorn confronts a bear while an additional human threat is prepared against him.

Seasonal celebration brings new arrivals and sharper declarations of allegiance. Bjorn survives the attack planned against him, and Harald introduces an ambition that extends beyond Kattegat.

Secrets circulate among lovers and political partners. Lagertha’s apparent wedding resolves the struggle over Hedeby, while Ragnar reveals a failure he has kept from his own people.

The return to Paris takes shape as a clash between the brothers’ commitments. Ragnar brings younger sons into the voyage while the Seer gives him an enigmatic account of his death.

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 overland operation returns the fleet to the water, while private losses and coercion continue around it. Ragnar finally states how personal his objective in Francia has become.

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 finds that his sons have plans and obligations of their own. His attempt to recruit companions becomes a sequence of farewells before Ivar agrees to sail with him.

Bjorn’s expedition attracts a substantial fleet, while Ragnar must pay men to accompany him. Aslaug foresees disaster for Ivar, but mother and son cannot agree on whether the journey should happen.

The shipwreck leaves Ragnar’s group exposed in Wessex. Bjorn negotiates with a powerful relative in Francia, while Lagertha moves against a throne left vulnerable at home.

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.

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.

Bjorn’s expedition raids Algeciras and encounters religious life unfamiliar to its travelers. At home, the news of Ragnar’s death sharpens Lagertha’s vulnerability and his sons’ desire for revenge.

The movement for revenge brings ships and warriors into Kattegat, but the family supplying its leaders is already divided. Bjorn protects Lagertha even as he joins the undertaking against the Saxons.

The Great Army crosses to Northumbria and overwhelms Ælle’s defense. The long-promised vengeance reaches its target while the coalition’s leadership and private loyalties remain unsettled.

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.

A Saxon defeat leads to Ecbert’s final bargain, while the victorious brothers split over what to do next. The season ends with deaths inside the Viking circle as well as the fall of a familiar king.

The aftermath of Sigurd’s death leaves the brothers without a common plan. Ivar admits killing him but deflects responsibility toward the taunts that preceded it. Bjorn prepares to travel with Halfdan, Floki leaves by boat, and the remaining army takes York. Harald’s return to Lagertha produces another confrontation over ambition and loyalty.

Floki reaches a landscape he interprets as Asgard. In Kattegat, Lagertha imprisons Harald and refuses his proposed alliance; their encounter includes sexual assault. Harald’s men free him and abduct Astrid. Alfred’s vision directs Saxon attention toward York, where Ivar demonstrates his leg braces while his struggle with Ubbe intensifies.

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.

Ubbe returns to Kattegat and aligns himself with Lagertha against Ivar and Harald. Astrid agrees to marry Harald. Bjorn’s Mediterranean journey brings him into Commander Euphemius’s service. At York, the Saxons try to starve the Vikings out, then enter a seemingly deserted city after hearing that their opponents have gone.

The Vikings emerge from York’s sewers and attack the Saxons, taking Heahmund prisoner. Floki returns to Kattegat and seeks settlers for his new land. Bjorn’s group receives hospitality in North Africa that turns threatening: Euphemius has been killed, and Bjorn and Halfdan are detained as a storm approaches.

Bjorn, Halfdan and Sinric use a sandstorm to escape their captors. Harald and Ivar agree to attack Lagertha. Astrid sends a warning through Hakon, whose crew sexually assaults her during the effort. The message reaches Kattegat. After Heahmund kills a fellow captive who taunts him, Ivar decides the bishop will fight for his side.

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.

The two sides meet before battle, but a possible agreement collapses when Ivar rejects peace. Lagertha’s forces then gain an advantage, including an ambush against Hvitserk’s men, and Harald’s side retreats. Harald believes Heahmund has died. Lagertha instead finds the bishop alive and orders that he be saved. Floki’s settlement faces its own disputes.

Heahmund pledges his loyalty to Lagertha after surviving the battle. In Wessex, Aethelwulf dies following a bee sting, and Alfred becomes king after Aethelred declines the crown. In Iceland, the burning of the temple leads to violence and a death, turning the settlers’ disagreements into a more destructive cycle.

The renewed battle brings devastating personal losses. Harald kills Halfdan, Hvitserk kills Guthrum, and Astrid asks Lagertha to end her life. Bjorn orders a retreat. Back in Kattegat, Torvi recovers her children from Margrethe, while Bjorn finds Lagertha profoundly altered by the ordeal. Rollo arrives as the balance of power changes.

Ivar claims Kattegat’s kingship and threatens Lagertha. Rollo proposes a trading arrangement and offers Lagertha and Bjorn refuge in Francia, which they refuse. In Iceland, a vote spares Floki from sacrifice. Alfred faces resistance to his plans in Wessex. Lagertha’s group reaches England and is brought before the new royal order as captives.

Alfred offers to honor earlier arrangements if the Norse newcomers fight for him. In Kattegat, Freydis secretly seeks pregnancy through another man while encouraging Ivar to believe the child will be his. Margrethe is killed. Heahmund murders Cuthred after a blackmail threat involving Lagertha, and Floki’s confidence in the gods falters.

Ivar presents himself as divine and stages a public display around sacrifice. In Wessex, Ubbe and Torvi accept baptism while Alfred tries to consolidate his rule and Heahmund defends his actions. Magnus approaches Bjorn claiming to be Ragnar’s son. Aethelred becomes involved in the plotting against Alfred.

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.

Harald attacks Wessex, where Alfred’s Norse allies help shape the defense. Heahmund dies in the fighting after looking for Lagertha, who disappears. Bjorn searches for his mother among the casualties. Harald withdraws after defeat, and Alfred publicly acknowledges the contribution of his allies while the conspiracy within his own household comes into focus.

Alfred forgives Aethelred, but Judith poisons her son to protect Alfred’s position. Ubbe gains the possibility of settlement in East Anglia. Bjorn moves toward an alliance with Harald and Magnus against Ivar. Hvitserk encounters Buddhism in Kattegat, while Floki’s settlement offers Eyvind’s family another chance through Kjetill.

Judith tells Alfred that she poisoned Aethelred. Ivar sends Hvitserk on a diplomatic mission while threatening Thora. In Iceland, Kjetill kills Eyvind’s family, and Aud responds by taking her own life. Ubbe proposes that he command Alfred’s forces as another threat to Wessex approaches.

Bjorn marries Gunnhild and prepares to oppose Ivar with Harald. Hvitserk visits Olaf and questions his earlier allegiance. Ivar has Thora executed and rejects Freydis’s newborn son, abandoning the infant. Judith discusses her illness and the killing of Aethelred with Lagertha, whose recovery takes place alongside that difficult exchange.

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.

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.

Bjorn begins ruling Kattegat while Lagertha chooses retirement. In exile, Ivar encounters a ruler whose cruelty makes his own claims to power suddenly precarious.

Oleg consolidates his control over the young heir Igor. Bjorn’s decision to help Harald draws him away from the unsettled community he has only just inherited.

Bjorn’s rescue attempt runs into Olaf’s defences. Elsewhere, the fragility of Lagertha’s retirement becomes clear, and Ivar sees the price of Oleg’s family dominance.

Olaf proposes electing a single king of Norway. Lagertha’s village survives a raid at a devastating personal cost, while Ivar begins building an alternative to Oleg’s rule.

The Norwegian election becomes a contest of influence rather than an inevitable coronation for Bjorn. In Kiev, a rescue and an uncanny resemblance complicate Ivar’s position.

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.

Kattegat gives Lagertha a ceremonial farewell. Her death leaves both a public absence and a private demand for justice, as Bjorn returns to a transformed family.

Bjorn stages a severe punishment for Hvitserk but ultimately exiles him. Kattegat’s domestic instability unfolds alongside the first tangible signs of a Rus attack on Norway.

Ivar and Hvitserk reunite while the Rus invasion takes shape. Bjorn’s marriage to Ingrid competes with preparations for a threat that requires cooperation with Harald.

Bjorn and Harald attempt to stop the Rus invasion. The battle is intercut with unsettling conversations between Bjorn and Ivar, leaving defeat clear but individual fates unresolved.

Bjorn survives long enough to make a final appearance against the Rus. His presence transforms the invasion’s outcome and completes his transition from ruler to remembered legend.

Bjorn’s death opens a succession contest in Kattegat. In Kiev, Oleg tightens control around Igor, while Ivar’s plans become more exposed and Ubbe chooses another voyage.

The plan to extract Igor uses a religious celebration as cover. A storm devastates Ubbe’s expedition, and Harald’s return interrupts Kattegat’s attempt to choose its ruler.

Igor’s rescuers reach Dir’s territory, while Oleg faces the consequences of his nephew’s disappearance. Harald consolidates power, and scarcity threatens the latest settlement.

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 and Hvitserk return to a hostile Kattegat. The search for purpose eventually becomes a proposal to invade Wessex, as Ubbe’s survivors drift in worsening conditions.

The English campaign begins while Ubbe’s exhausted survivors approach land. In Kattegat, Ingrid turns Erik’s ambition into a vulnerability as the rulers abroad prepare for battle.

Ubbe’s group explores a fertile coast already inhabited by others. Alfred commits to resisting the invasion, while Ingrid asserts more practical control in Kattegat.

Alfred and Ivar begin the decisive engagement. Harald dies, Ingrid survives the plot against her, and Ubbe discovers that a familiar voyager has reached the new land before him.

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.