With History Channel's "Vikings" set to air the second half of its fourth season on Nov. 30, fans of the show are waiting with bated breath to see how the cast and crew of the epic show could top the major battles that it has already delivered in previous seasons.

In the latest promo video for season 4B, Bjorn Ironside ( Alexander Ludwig) seeks the counsel of the Seer (John Kavanagh) and confides that he does not want his father back in Kattegat. The Seer in turn warns the young warrior that Ragnar's (Travis Fimmel) return to his home heralds calamity, chaos, tragedy, and death, to which Bjorn replies that he is not afraid.

The promo also shows Lagertha (Katheryn Winnick) in full battle mode and ready to take Kattegat back from Queen Aslaug (Alyssa Sutherland). Lagertha seeks revenge on Aslaug, who has taken both her husband and her home from her, and the battle between the two women promises to be epic.

The video also shows Bjorn headed for the Mediterranean Sea, as well as Ragnar addressing his son Ivar the Boneless (Alex Hogh Andersen) and rallying him to march to Paris to seek revenge and become the leader that he is born to be.

Meanwhile, Katheryn Winnick has confirmed that they are already in the post production stage of season 4B and have already started filming for season 5, reported HNGN. If the first half of season 4 already had fans at the edge of their seats, season 5 promises to be even more exciting with the addition of "The Tudors" actor Jonathan Rhys Myers, who was cast for a yet undisclosed role.

The actor has already started filming for the series and this marks the second time that he will be working with Vikings creator Michael Hirst after both men worked together in "The Tudors," reported IBTimes.

"First scene with Johnny (Rhys Meyers) today btw. He's absolutely phenomenal. Top notch," said Andersen, leading fans to deduce that Meyers' storyline is related to that of Ivar the Boneless.