The Northern men as set to push their mission in France while Ragnar's addiction is going to rise to a higher level in "Vikings" season 4 episode 9.

"Vikings" season 4 episode 9 is entitled "Death All Round." According to International Business Times, fans are going to see the Northmen once again, as they traverse their way to Paris, in France.

As per the publication, the Northmen are set to sail the water following their mountain journey in the previous episodes. In addition, the promo trailer for "Vikings" season 4 episode 9 revealed that there is going to be a change to Ragnar's mission. It is seen that the character is no longer willing to get a grip on Paris. Instead, he is now interested on having the head of his untrustworthy brother, which is also assumed as the plan of the latter.

Episode 9 is also set to see a possible sequence that leads to a battle between Ragnar and Emperor Charles, since the Rollo told the latter in previous episode that he could be victorious over the former when he killed him. Thus, it is then assumed that to reach that story plot, fans have to see battles, blood, and death.

In Wessex, King Ecbert is also set to be together again with King Aelle. On the other hand, the Northumbrian ruler will lose his interest to celebrate the Eucharist with the nefarious monarch.

In other news, Ragnar is also set to become more addicted in "Vikings" season 4 episode 9, according to Movie News Guide. As per the publication, he asks Yidu for his drug prior to the Norse chieftain travels to Paris; however, Yidu tells the former that they no longer has stock of the drug and warns him that his secret will be unveiled. Surprisingly, Ragnar will drown Yidu and gets her stock.

"Vikings" season 4 episode 9, "Death All Round," is set to air on Apr. 14 on History Channel. Watch the promo trailer here.