As the city falls, Ivar manages to escape Kattegat in disguise, heading east in a wagon.
In the Season 5 finale of Vikings , titled the long-standing civil war between the sons of Ragnar Lothbrok reaches a bloody conclusion at the walls of Kattegat. The Siege of Kattegat RagnarokVikings : Season 5 Episode 20
Using the secret passage, Bjorn’s forces infiltrate the city. Many of Ivar's defenders, moved by Bjorn’s earlier speech that they were "children he grew up with," refuse to fight. As the city falls, Ivar manages to escape
The tide turns when Ivar’s wife, , betrays him. Grieving for the infant son Ivar left to die, she sneaks into Bjorn’s camp and reveals a secret entrance into the city. Many of Ivar's defenders, moved by Bjorn’s earlier
Ivar realizes the betrayal and, in a chilling final confrontation, tells Freydis he loves her before strangling her to death.
With the battle won, returns and presents Bjorn with the Sword of Kings, declaring him the rightful King of Kattegat.
Bjorn Ironside, Hvitserk, and King Harald launch a massive assault to reclaim their home from their tyrannical brother, Ivar the Boneless. The first wave is a brutal failure; Ivar’s superior defenses, including tar and fire, force a retreat. During this initial clash, is killed by an arrow after finally embracing his Viking identity. Betrayal and the Fall of Ivar