Season five begins with Ivar the Boneless asserting his leadership over the Great Heathen Army, while Lagertha reigns as Queen of Kattegat. Iver's murder of his brother Sigurd sets the stage for vicious battles to come, as Ragnar's sons plot their next move after avenging their father's death.

Battles, treachery and power grabs rage on in Vikings Season Four. Ragnar₂s return to Kattegat following his shameful defeat in Paris escalates tension among his sons. Determined to save what remains of his legacy, Ragnar recruits Ivar for a perilous voyage to England, where he plans to attack the Saxons. Meanwhile, a prophecy that a woman will one day rule Kattegat deepens Aslaug and Lagertha₂s feud.

Vikings returns for a gripping fourth season. Season three culminated with the extraordinary battle in Paris, where Ragnar seized victory from the jaws of defeat, but still returns to Kattegat dangerously ill. Thoughts of his death galvanize the forces who seek to succeed him as king, including his wife Queen Aslaug and his oldest son, Bjorn. Meanwhile, Lagertha continues power struggles with her calculating, former second in command, Kalf.

Prepare to raid and wage battle once again, in an ancient kingdom dominated by vengeance, lust and thrilling conquest. The gripping family saga of Ragnar, Rollo, Lagertha and Bjorn continues as loyalties are questioned and bonds of blood are tested. Now king of his people, Ragnar remains a restless wanderer, leading his band of Norse warriors on epic adventures from the shores of Essex to the mythical city of Paris. But stunning betrayals and hidden...

Follows the adventures of the sons of legendary Viking, Ragnar Lothbrok, at the beginning of the Viking Age.