As the second half of "Vikings" season 4 is just weeks away, it is already speculated that its season 4B will feature lots of anger stemming from different reasons.

It has already been announced that the upcoming season 4B of "Vikings" will feature a time-jump. Although it is already expected that Ragnar Lothbrok (Travis Fimmel) will return to Kattegat following his defeat from his brother, Rollo (Clive Standen) in the season 4A finale, he will not immediately do so as he wanders to different places. However, when he returns to the kingdom that he used to rule, things will have already changed a lot.

Among the many changes that Ragnar is said to experience upon his return is that his sons will no longer recognize him. In fact, it is even said that the now-grown-up boys will not be happy about his return. However, among his sons, Ivar the Boneless (Alex Hogh Andersen) is said to have the desire to make up for the lost times with his father, just like any typical teenager who hasn't seen his father for years.

"Ragnar fills him with the ambition to develop and do something, get out of the world and not just dragging himself around," Andersen said on a Facebook video.

Apart from the anger of Ragnar's sons toward him, Lagertha (Katheryn Winnick) is also said to display her anger toward Aslaug (Alyssa Sutherland), not only because the latter destroyed her marriage with Ragnar but also took away her land. Winnick has even said that fans can expect a catfight between the two power women as they engage in a showdown of force.

"I want you to know that I can never forgive you for taking away my husband and my world," Lagertha tells Aslaug in the teaser for "Vikings" season 4B.

Ragnar will also vent out his anger on King Ecbert of Wessex (Linus Roache) for the murder of the Vikings settlement there, which the king originally promised to protect. Reportedly, Ragnar will attack King Ecbert with an army much bigger than what he brought with him at the battle in France where he lost.

How will Ragnar and Ivar the Boneless make up for the lost times? Who will emerge as the victor in the battle of Lagertha and Aslaug? Can Ragnar really avenge the deaths of the Vikings at Essex?

Find out when "Vikings" returns to History Channel for its season 4B beginning Nov. 30.