'Vikings' Season 4 Latest Spoilers & Update: The Great Heathen Army Continues Their Journey; King Ecbert & Aethelwulf Prepares

Ragnar Lothbrok (Travis Fimmel) is already dead and Lagertha (Katheryn Winnick) is the one who rules Kategatt in "Vikings" Season 4. In the latest episode of the season, the sons of Ragnar are one to take on their revenge on their father's death.

Bjorn Ironside (Alexander Ludwig) is ruling the army being Ragnar's eldest son. All of his other brother follow his lead as they start the journey in taking their revenge for Ragnar in "Vikings" Season 4.

The one challenge that the brothers face in "Vikings" Season 4 are King Harald and Halfdan. It is not a secret that Harald wants to rule the whole of Norway. This battle is just the first step for Ragnar's sons in taking on their revenge towards the person who killed their father.

According to a report, the Great Heathen Army which is led by Bjorn has succeeded by far with their quest. "Vikings" Season 4 has only two episodes left and there are more challenges that these brothers are to face upon fighting for what has been taken from them.

Ivar (Alex Hogh Andersen) and Bjorn have been clashing in the course of the episode but they have only one goal. They have to work together in order to win. "Vikings" Season 4 continues with the sons of Ragnar showing off their strength and fighting the enemies as the story moves along.

Meanwhile, the next episode of "Vikings" Season 4 is titled 'On the Eve.' This time, Ragnar's sons will journey towards the English countryside. They all prepare for a new battle and this time it will be with King Ecbert (Linus Roache) and Aethelwulf (Moe Dunford).

King Ecbert and Aethelwulf plan for a solid defense as Ragnar's sons come to their territory. They need to build a solid army in order to fight the Great Heathen Army in "Vikings" Season 4.

"Vikings" Season 4 airs Wednesday nights.