Prince Aethelwulf finds himself subject to the Vikings’ battle master plan. Ecbert remains behind with a plan of his own.

Lagertha attempts to fulfill a long-held ambition. Ragnar negotiates an unexpected concession from King Ecbert.

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

Bjorn’s fleet sails onward and launches a surprise attack. Back in Kattegat, Lagertha continues in her quest for power.

The Viking army begins to gather in Kattegat. Lagertha must remain vigilant in the absence of her son, Bjorn.

Ragnar’s plan comes to fruition. The Viking army lands on the coast of Northumbria.

A ferocious battle between the Vikings and the French eventually comes down to Ragnar against Rollo. The outcome will seal the fate of the two brothers.

Ragnar returns to Kattegat and formulates a plan to head back to Wessex, where he intends to right past wrongs.. Meanwhile, Lagertha plans a power play in Kattegat and Bjorn…

The Kattegat locals chide Ragnar that the gods have deserted him as he struggles to crew his voyage to Wessex. It’s Bjorn who has charisma now as he prepares to…

Ragnar’s fleet is shipwrecked and washes up on the Wessex coast, but without enough survivors to form a credible force, Ragnar and Ivar have a difficult decision to make. Rollo…

Ragnar declares another raid on Paris at the Thing in Kattegat. Ecbert also has a journey in mind as he dispatches Aethelwulf and Alfred on a pilgrimage to Rome.

In England, King Ecbert’s true ambitions are revealed as he plots to gain the crown of Mercia while outside Paris. The Vikings attack Paris with considerable force, but will Rollo’s…

Defeat for the Vikings calls Ragnar’s leadership into question as they evacuate their camp and move back down river. Ragnar remains inscrutable until he orders the fleet to beach at…

The labors of the Vikings eventually bear fruit as, within sight of Paris, they re-launch their boats but this time along with some interesting structures that Floki has built. Aethelwulf…

Floki learns of the heavy price he has paid for his actions. Rollo finds an unlikely ally in Count Odo. Bjorn has to fight a fierce opponent in the wilderness.

King Aelle goes to Wessex for Christmas and is not impressed with how family relations are developing. Rollo’s future hangs in the balance.

There’s an air of betrayal as those whom Odo trusts plot against him. Ecbert agrees to support Kwenthrith in Mercia. Pregnancy brings happiness to Lagertha and Kalf and a marriage…

A dangerously ill Ragnar returns to Kattegat, where his suspected death kicks off a scramble to succeed him. Meanwhile, Lagertha engages in a power struggle with her calculating, former second…

As Ragnar and Floki remain at odds, Rollo makes great efforts in Paris to win over his new bride, Princess Gisla. Meanwhile, King Ecbert sets the task for his son…

A married couple having troubles in bed, finding their sexual satisfaction outside their marriage.

Three estranged sisters learn they will experience a year of bad luck at the same time — and must come together in an effort to fix their misfortune.

Three estranged sisters learn they will experience a year of bad luck at the same time — and must come together in an effort to fix their misfortune.

Jae-hee informs Baek-ryeon that Sang-hyuk is not human, and Baek-ryun suddenly remembers Sang-hyuk’s missing hand. Meanwhile, she realizes that she forgot to climb the mountain one last time so she…

Hayden, who has just moved to a new place, coincidentally helps Damien’s grandmother and meets Damien in the process. The two individuals, who had no connection before, start a complicated…

After seeing Tae Ho collapse, Hyo Sim consoles him. She asks him why he is so sad, but Tae Ho laughs it over. After spending a honeymoon practically separately, Tae…