The story takes place 183 years before the events of The Lord of the Rings: The Fellowship of the Ring and revolves around the character of Helm Hammerhand, a legendary King of Rohan. The film follows Helm's quest for justice and peace in a time of great turmoil in Rohan. The plot centers around Helm's battle against the Dunlendings, a dark and menacing force that threatens the land of Rohan.