The Fellowship of the Ring

In the Second Age of Middle-earth, the lords of Elves, Dwarves, and Men each receive Rings of Power. Unbeknownst to them, the Dark Lord Sauron forges the One Ring, imbuing it with his power to control the other Rings and conquer Middle-earth. An alliance of Men and Elves battles Sauron's forces in Mordor. Isildur of Gondor severs Sauron's finger, vanquishing him and returning him to spirit form, marking the beginning of the Third Age. The Ring corrupts Isildur, who takes it and is later killed by Orcs. The Ring is lost in a river for 2,500 years until it is found by Gollum, who possesses it for five centuries until it abandons him and is found by a hobbit named Bilbo Baggins.
Decades later, Bilbo celebrates his 111th birthday in the Shire with his old friend, the wizard Gandalf the Grey. He leaves the Shire for one last adventure, passing on his inheritance, including the Ring, to his nephew Frodo. Gandalf investigates the Ring, learns its true nature, and discovers that Gollum was captured by Sauron and revealed two words during interrogation: "Shire" and "Baggins". Gandalf warns Frodo to leave the Shire. As Frodo departs with his gardener friend, Samwise Gamgee, Gandalf travels to Isengard to consult with the wizard Saruman. Saruman reveals Sauron has dispatched his nine Nazgûl servants to retrieve the Ring. Gandalf immediately attempts to flee to warn Frodo, but is imprisoned by Saruman, who has allied himself with Sauron.
Frodo and Sam join up with fellow hobbits Merry and Pippin and evade the Nazgûl before reaching Bree to meet Gandalf, who never arrives. A Ranger named Strider helps them get to Rivendell but they are ambushed on Weathertop by the Nazgûl, who wound Frodo with a Morgul blade. Arwen, Strider's Elf beloved, finds them, rescues Frodo, and takes him to Rivendell to be healed and reunite with Gandalf, who had escaped Isengard on a Great Eagle. That night, Arwen declares to Strider she is willing to sacrifice her immortality for their love.
Learning from Gandalf and that they now face threats from both Sauron and Saruman, Arwen's father Lord Elrond holds a council of Elves, Men, and Dwarves, also attended by Frodo and Gandalf. There they decide the Ring must be destroyed. However, Elrond explains that it can only be destroyed in the fires of Mount Doom, the volcano where it was forged. Frodo volunteers to take the Ring, accompanied by Gandalf, Sam, Merry, Pippin, the Elf Legolas, the Dwarf Gimli, Boromir of Gondor, and Strider—who is actually Aragorn, Isildur's heir and the rightful King of Gondor.
The Fellowship of the Ring is forced to travel through the Mines of Moria due to a storm summoned by Saruman. Gandalf warns Frodo that Gollum, released from Sauron's fortress, has been trailing them with the intention to reclaim the Ring. They find the Dwarves of Moria dead and are attacked by Orcs and a troll. While they hold off the attack, they are pursued by a Balrog. The others escape as Gandalf confronts the Balrog and falls into a deep chasm while battling it. The devastated Fellowship reaches Lothlórien, where Galadriel, the Elf-queen, tells Frodo that he alone can complete the quest and warns that one of his companions will try to take the Ring. She shows him a vision of Sauron enslaving Middle-earth should he fail. Meanwhile, Saruman creates an army of Uruk-hai in Isengard to destroy the Fellowship.
The Fellowship travels to Parth Galen by river. As warned by Galadriel, Frodo is confronted privately by Boromir, who attempts to take the Ring. Uruk-hai scouts ambush the group; their leader, Lurtz, mortally wounds Boromir as he fails to stop them from capturing Merry and Pippin. Aragorn arrives and kills Lurtz, comforting Boromir in his final moments, promising to aid Gondor in their conflict. Worried the Ring will corrupt his friends, Frodo decides to go to Mordor alone, but Sam insists on accompanying him, honouring Gandalf's promise to protect him. Aragorn, Legolas, and Gimli plan to rescue Merry and Pippin, while Frodo and Sam navigate the pass of Emyn Muil towards Mordor.