The Fellowship of the Ring is an American-British action adventure fantasy film based on the 1954 first three volumes of The Lord of the Rings of the same name by J.R.R. Tolkien. It was followed by The Two Towers and The Return of the King and had a prequel in The Hobbit.
In the Second Age of Middle-Earth, Elven smiths forged Nine Rings of Power for mortal men, Seven Rings for the Dwarf-Lords and Three Rings for the Elf-Kings. However, an elf named Mairon was corrupted by a Necromancer, and using the secrets hed had learned from his fellow elves, forged his own ring; the One Ring, which would allow him to control the other Ringbearers, thereby allowing him to conquer all of Middle-Earth. He became further corrupted by dark magic and became the Dark Lord Sauron. Sauron captured the Nine Mortal holders of the Rings and transformed them into terrible creatures known as Ringwraiths. It became clear to both Man and Elf that Sauron was a danger and they formed an alliance to bring him down. The One Ring was cut from Sauron's finger by Prince Isildur, but Isildur was also corrupted by the Ring and refused to destroy it. Isildur was eventually slain in battle by Orcs, and the Ring was dropped into a river and lost, until it eventually fell into the hands of Gollum, who held it for 500 years, his sanity deteriorating over time. One day, Gollum dropped the Ring and it was stolen by Bilbo Baggins (as seen in The Hobbit), who held it for 60 years.
On his 111th birthday, Bilbo decides to leave his homeplace of the Shire and retire in Rivendell, an Elf haven. During his birthday celebrations, Bilbo is visited by Gandalf the Grey, a wizard who accompanied him on the quest during which he found the Ring years before. Bilbo then departs, leaving all of his possessions to his nephew, Frodo. Amongst these belongings is the One Ring.
Later, Frodo is alone in the Shire when it is attacked by a Ringwraith. Gandalf arrives and fights the Ringwraith off before explaining the Ring's history to Frodo. It is revealed that Sauron is rising again ad Gandalf believes he is ready to make his return, but needs the Ring to do so. Not wanting to endanger his home, Frodo decides to leave the Shire, but runs into his friend Samwise "Sam" Gamgee. When Sam learns what Frodo is doing, he refuses to leave him, and so Frodo reluctantly allows Sam to accompany him.
Gandalf goes to Isengard to meet with the head of his order, Saruman the White. Gandalf tries to discuss what to do about Sauron and the Ring, when Saruman suddenly reveals himself to be in league with Sauron. Gandalf is imprisoned atop the tower and Saruman reveals a new breed of Orc fightes he created; the Uruk-hai, led by Azog the White Goblin. He sends the Uruk-hai to retrieve the Ring.
Frodo and Sam decide to head towards Bree, and run into two more Hobbits, Meriadoc "Merry" Brandybuck Peregrin "Pippin" Took, who are on the run from Farmer Maggot after he caught them stealing crops from his farm. The group then encounter the Ringwraiths and are pursued down the Brandywine River, only to be rescued by the mysterious ranger Aragorn. They learn that Elrond, Lord of Rivendell, has called a council of all races still loyal to Middle-Earth and Aragorn decides to accomapny them to Rivendell.
While resting, Merry and Pippin light a campfire, unwittingly alerting the Ringwraiths to their location. They are chased and Frodo becomes separated from the group. He is cornered by the Ringwraiths, but is rescued by Elrond's daughter Arwen, who summons a surge of water to wash the Ringwraiths down the river. She then unites with the rest of the group and escorts them to Rivendell.
Gwaihir, the Eagle King, rescues Gandalf from the tower and takes him to Rivendell in time for the council. Elrond reveals that the only way to destroy the One Ring in to toss it into the fire of Mount Doom in the land of Mordor. Frodo volunteers to take the Ring to Mount Doom to dispose of it, and is joined by Sam, Merry, Pippin, Gandalf and Aragorn. Elrond assigns the Elf archer Legolas, Dwarf Gimli and Boromir, a man of Gondor, to accompany them. Together, they form the Fellowship of the Ring.
While the Fellowship make camp one night, flashbacks reveal that Aragorn once encountered Azog in battle, during which he cut his arm off. Azog, upon learning that Aragorn has joined the Fellowship, is further driven for revenge and increases the ferocity of his search. Meanwhile, the Fellowship must travel through the underground Dwarf city of Moria. They accidentally awaken the Balrog, an ancient demon made of shadow and flame. Gandalf confronts the Balrog and seemingly defeats it, allowing the others to escape. However, the stone bridge Gandalf is standing on is destroyed by the Balrog and they both plunge into the abyss.
Distraught by Gandalf's death, the Fellowship retreat into the forest of Lothlorien, and are granted shelter by it's rulers, Galadriel and Celeborn. That night, while the others sleep, Frodo is unable to, still haunted by Gandalf's demise. He is approached by Galadriel, who tells Frodo to rest, and also informs him that it is his destiny to destroy the One Ring. The Fellowship subsequently move on towards Parth Galen, while Boromir openly talks about the benfits of using the Ring against Sauron. When they make camp that night, Boromir tries to steal the Ring, but Frodo puts the Ring on and turns invisibility, using this to slip away. Regretful of his actions, Boromir also leaves the group.
The next morning, when Sam sees that Frodo has fled, he chases off after him. While the others debate on what to do, the Uruk-hai descend upon them and an epic battle ensues. Aragorn, Gimli and Legolas try to hold off the Orcs, while Merry and Pippin run deeper into the fores to create a distraction, only to be captured. With the other three outnumbered, all seems lost, until Boromir returns to redeem himself and save them. He fights valiantly until he is shot with a crossbow by Azog. Before the Goblin can deal the final blow, he is tackled by Aragorn. However, Aragorn is exhausted by the battle and Azog easily pins him to a tree. Boromir uses his last ounce of strength to throw his shield at Azog, decapitating him.
Shortly thereafter, Boromir dies with Aragorn, Legolas and Gimli at his side. The trio decide to set out to rescure Merry and Pippin, while Sam reunites with Frodo, once again reluctantly agrees to let him come with him to Mount Doom.