The Lord Of The Rings, Behind The Scenes

The Ents attack Isengard, trapping Saruman in the tower of Orthanc. Gandalf, Théoden and the others arrive at Isengard to confront Saruman. Saruman refuses to acknowledge the error of his ways, however, and Gandalf strips him of his rank and most of his powers. Merry and Pippin rejoin the others and Pippin looks into a palantír, a seeing-stone that Sauron had used to communicate with Saruman, unknowingly leading Sauron to think that Saruman has captured the Ring-bearer, so Gandalf takes Pippin to Gondor.
On their way to Mordor, Frodo and Sam capture Gollum, who has been following them from Moria, and force him to guide them to Mordor. Finding Mordor's main gate impassable, they travel toward a pass known to Gollum. Gollum betrays Frodo by leading him to the great spider Shelob in the tunnels of Cirith Ungol. Frodo is left seemingly dead by Shelob's bite, but Sam fights her off. Sam takes the Ring, and forces himself to leave Frodo. Orcs find Frodo's body, and Sam learns that Frodo is not in fact dead, but unconscious. Frodo is carried to the tower of Cirith Ungol, and Sam determines to rescue him.
Sauron begins his military assault upon Gondor. Gandalf arrives at Minas Tirith in Gondor with Pippin, to alert Denethor of the impending attack. Minas Tirith is besieged, and Denethor, under the influence of Sauron through another palantír, loses hope and commits suicide. Aragorn, Legolas and Gimli come to Gondor by the Paths of the Dead, where Aragorn raises an undead army of oath-breakers in fulfilment of an old prophecy. The ghostly army help him to defeat the Corsairs of Umbar invading southern Gondor, and the forces freed from the south, along with Rohan's cavalry, help break the siege at Minas Tirith.
Sam rescues Frodo, and they journey through Mordor. Frodo weakens as they near Mount Doom, but is aided by Sam. Meanwhile, in the climactic battle at the Black Gate of Mordor, the vastly outnumbered alliance of Gondor and Rohan fight desperately against Sauron's armies, with the intent of diverting Sauron's attention from Mount Doom. At the edge of the Cracks of Doom, Frodo is unable to resist the Ring, and claims it for himself. However, Gollum reappears, struggles with Frodo for the Ring, and bites off Frodo's finger, Ring and all, but in so doing falls into the fire, taking the Ring with him. The Ring is thus unmade. In the instant of its destruction, Sauron perishes, his armies retreat, his tower crumbles into dust, the Ringwraiths disintegrate, and the War of the Ring seemingly ends. Aragorn is crowned Elessar, King of Arnor and Gondor, and marries his long-time love, Arwen, the daughter of Elrond.