The season begins with Ragnar Lothbrok (Travis Fimmel) recovering from the wounds sustained during the siege of Paris. Weakened physically and spiritually, Ragnar’s grip on power begins to slip as doubts about his leadership spread among his family and followers.

As Ragnar battles his personal demons, his sons—Bjorn Ironside (Alexander Ludwig), Ubbe (Jordan Patrick Smith), Hvitserk (Marco Ilsø), and Ivar the Boneless (Alex Høgh Andersen)—emerge as key players, each grappling with their father’s legacy and their roles in shaping the Viking world. Bjorn embarks on a daring journey to the Mediterranean, while Ivar’s cunning and ruthlessness begin to solidify his reputation.

Meanwhile, Lagertha (Katheryn Winnick) pursues her ambitions to reclaim Kattegat, leading to a dramatic and deadly power struggle. Floki (Gustaf Skarsgård) and Rollo (Clive Standen) face their own challenges, with Floki questioning his faith and Rollo finding himself at odds with his Viking heritage as he embraces his new life in Frankia.

As alliances fracture and rivalries intensify, the season culminates in a climactic showdown that forever changes the course of the Viking world.

Vikings: Season 4 delivers breathtaking battles, emotional depth, and unforgettable character arcs, exploring themes of loyalty, legacy, and the high cost of ambition in a world defined by honor and betrayal.