The film's narrative is a continuation of the previous installments, "La Communauté de l'Anneau" (The Fellowship of the Ring) and "Les Deux Tours" (The Two Towers). Frodo and his loyal friend Samwise Gamgee (Sean Astin) are on a mission to destroy the One Ring in the fires of Mount Doom, while Aragorn (Viggo Mortensen), Legolas (Orlando Bloom), and Gimli (John Rhys-Davies) join forces with the armies of Rohan and Gondor to distract Sauron's forces and give Frodo a chance to complete his quest.