The final devastating battle for Middle-earth begins. Frodo and Sam, guided by Gollum, continue their perilous mission toward the fires of Mount Doom in order to destroy the One Ring, without being aware Gollum is leading them into a trap so that he can repossess the Ring for himself. Meanwhile, the former Fellowship aid Rohan & Gondor in a great combat in the Pelennor Fields, Minas Tirith and the Black Gates as Sauron sets out his last war to crush Middle-earth.