“Vikings”’s Bjorn is ready to cut the cord. It’s time for the prince to strike out on his own, and, in doing so, become greater than his father ever was. Ragnar (Travis Fimmel) disappeared into the wilds following his Parisian conquest, but the King of Denmark straggled back home as season 4A concluded with a multi-year time jump. Alexander Ludwig’s Bjorn is now a warrior in his own right -- a development he will soon make abundantly clear.

A Viking must choose – Wessex or glory?

Ragnar has a decade old score to settle in Wessex; Bjorn has a map of the Mediterranean.

The Lothbrok men are at loggerheads, and the farmer’s eldest son will indulge his own wanderlust as season 4B begins.

“He wants to do something greater than his father ever has done, and this is why I am beyond excited for this season, because this is when he finally does it,” Ludwig teased in a “Vikings” featurette. “Bjorn [found] a map that was in Paris when they went on their first raid at the end of season 3 and he never told anybody about it, not even his father, because he knew how precious this map was. His ultimate objective throughout the entirety of season 4 is going to that place.”

In the latest clip, Bjorn tells Ragnar just that.

“Bjorn has always felt that his father doesn’t really treat him as a grown up or as an equal,” series creator Michael Hirst explained.

“He is following his own destiny. He refuses to go back to England with his father and he feels it’s his destiny to find that sea and explore it So despite appeals from his father to help him on his own quest, Bjorn decides that he’s going to go on his own and he’s going to do what he wants to do and what he feels he’s fated to do.”

And it will become the most fortuitous choice the Norseman has ever made…

Ragnar takes a turn for the worse

King Ecbert (Linus Roache) and Wessex are never far from Ragnar’s mind, but, according to the seer, it’s definitely someplace he should steer clear off.

By episode 13 (“Two Journeys”), viewers will know why.

In the meantime, check out the summary for the midseason premiere, “The Outsider”:

“Ragnar has returned to Kattegat and there are secrets to be revealed,” the History Channel teased. “He makes plans to return to Wessex to right past wrongs but finds that those who were once his closest allies now have plans of their own. Even the Lothbrok sons refuse to join their father’s mission – except one.”

“Vikings” will return to History Channel on Nov. 30 at 9 p.m. ET. Click the video below to see a preview: