Set 183 years before the events chronicled in the original trilogy of films, “The Lord of the Rings: The War of the Rohirrim” tells the fate of the House of Helm Hammerhand, the legendary King of Rohan. A sudden attack by Wulf, a clever and ruthless Dunlending lord seeking vengeance for the death of his father, forces Helm and his people to make a daring last stand in the ancient stronghold of the Hornburg— a mighty fortress that will later come to be known as Helm’s Deep.