Peter Jackson's Film Adaptation of The Return of the King:
The film opens with a sequence that shows how Gollum took the One Ring from his friend who had found it and ended up living under the mountain where Bilbo found him.
Gollum comes out of his reverie, awakens Frodo and Sam and tells them that they need to go. Gandalf, Aragorn, Gimli, Legolas, Théoden and Éomer ride to Isengard and find Merry and Pippin enjoying the bounty of Saruman's storerooms. Treebeard leads them to the Tower of Isengard where Gandalf speaks to Saruman. Pippin finds the Palantir amongst the debris, but Gandalf quickly takes it from him. They then return to Edoras. Gollum talks to himself and plots leading the two Hobbits to Shelob, which Sam overhears, but Frodo refuses to believe. In Edoras, Pippin takes the Palantir from Gandalf, looks into it and his mind is held by Sauron. After breaking the hold, Gandalf learns from Pippin that Sauron is about to attack Gondor. Gandalf then rides for Minas Tirith, taking Pippin.
Arwen is traveling to the Grey Havens to leave Middle Earth, when she has a vision of her son, Eldarion. She returns to Rivendell and tells her father, Elrond, that she is not leaving. She then asks him to have Narsil reforged. Gandalf and Pippin arrive at Minas Tirith and against Gandalf's advice, Pippin speaks of Boromir's fate to Denethor, Steward of Gondor. As Gandalf and Pippin speak that night, Gollum, Frodo and Sam begin to climb the Winding Stair outside Minas Morgul after Frodo nearly gives up the Ring. The city then begins to empty out with an army of Orcs.
Gandalf has a task for Pippin as the Orcs begin to overrun Osgiliath. Pippin manages to light the Beacon as a call to Rohan for aid. Théoden musters his men to Dunharrow. Osgiliath is overrun and Faramir orders a retreat, which Gandalf aids by driving off the Fell Beasts. Faramir then sees Pippin and tells Gandalf of his encounter with Gollum, Frodo and Sam, who are now climbing the Winding Stair. Pippin pledges his allegiance to Denethor, who then sends Faramir out on a futile mission to retake Osgiliath.
The Orc army closes in on Minas Tirith, as Aragorn calls on the King of the Dead to fulfill his oath of allegiance to the King of Gondor. Faramir is brought to Denethor, wounded but alive, as the Orcs begin their attack. Gollum leads Frodo into Shelob's Lair as Sam finds the Lembas on the stair below. Frodo manages to escape Shelob once and fight off Gollum. The gates of Minas Tirith are breached as Denethor has Faramir brought to the Tombs of the Stewards. Shelob finally captures Frodo then Sam arrives and drives her off. Orcs arrive and Sam hides. The Orcs take Frodo, saying that he is not dead.
Pippin tries to stop Denethor from burning Faramir alive. Denethor then discharges Pippin from his duty and Pippin goes to find Gandalf as the first level of Minas Tirith is overrun. Théoden and the Rohirrim arrive and shatter the Orc lines. Pippin finds Gandalf and they save Faramir from his father's madness. The Rohirrim have routed the Orcs, but the Haradrim with their Oliphaunts break the Rohirrim's lines. The Witchking then wounds Théoden. Eowyn appears, slays his Fell Beast and faces him. Aragorn, Gimli and Legolas arrive at Osgiliath on the Corsair ships with the Army of the Dead.
In the High Court of Minas Tirith, Aragorn suggests that they march on the Black Gate as a diversion so that Frodo and Sam can cross the Gorgoroth Plains to Mount Doom. Aragorn calls out Sauron as Frodo and Sam reach Mt. Doom. Gollum attacks them, but Frodo gets to the Cracks of Mt. Doom as the Eagles join the battle at the Black Gate. Frodo claims the Ring for his own, but Gollum bites and his finger off and takes the Ring. He falls into the Fires of Mt. Doom with the Ring. The Ring is finally destroyed.
