The return of Ragnar Lothrbok will soon be upon us, and he is coming for his revenge.

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IGN is excited to debut the new trailer for Vikings: Season 4, and it promises plenty of power struggles are ahead. Key among them is a showdown that seems to be building between Ragnar (Travis Fimmel) and his brother Rollo (Clive Standen), who was left behind in Paris at the end of Season 3 . Watch the full trailer below.Beyond the impending conflict between Ragnar and Rollo, Bjorn (Alexander Ludwig) is stepping up in Kattegat while Aslaug (Alyssa Sutherland) is pressing the Seer on whether a woman will succeed in power after Ragnar's eventual death. Meanwhile trouble is brewing in both Francia and England as the vikings plan another massive raid.Vikings is getting an oversized 20-episode Season 4 , which will be split into two parts. The first 10 episodes will premiere on February 18th at 10 p.m. ET/PT on History, and the second 10 episodes will air later in 2016.

Terri Schwartz is Entertainment Editor at IGN. Follow her on Twitter at @Terri_Schwartz