In the Second Age of Middle-earth, the lords of Elves, Dwarves, and Men are given Rings of Power. Unbeknownst to them, the Dark Lord Sauron forges the One Ring in Mount Doom, instilling into it a great part of his power, in order to dominate the other Rings so he might conquer Middle-earth. A final alliance of Men and Elves battles Sauron's forces in Mordor. Isildur of Gondor severs Sauron's finger and the Ring with it, thereby vanquishing Sauron and returning him to spirit form. With Sauron's first defeat, the Third Age of Middle-earth begins. The Ring's influence corrupts Isildur, who takes it for himself. Isildur is later killed by Orcs and the Ring is lost in a river for 2,500 years until it is found by Gollum, who owns it for five centuries. The Ring is then found by a hobbit named Bilbo Baggins, who is unaware of its history. Sixty years later, Bilbo celebrates his 111th birthday in the Shire, reuniting with his old friend, the wizard Gandalf the Grey. Bilbo reveals that he intends to leave the Shire for one last adventure, and he leaves his inheritance, including the Ring, to his nephew Frodo. Gandalf investigates the Ring, discovers its true nature, and learns that Gollum was captured and tortured by Sauron's Orcs, revealing two words during his interrogation: "Shire" and "Baggins." Gandalf returns and warns Frodo to leave the Shire. As Frodo departs with his friend, gardener Samwise Gamgee, Gandalf rides to Isengard to meet with the wizard Saruman, but learns that he has joined forces with Sauron, who has dispatched his nine undead Nazgûl servants to find Frodo. Frodo and Sam are joined by fellow hobbits Merry and Pippin, and they evade the Nazgûl before arriving in Bree, where they are meant to meet Gandalf. However, Gandalf never arrives, having been taken prisoner by Saruman. The hobbits are then aided by a Ranger named Strider, who promises to escort them to Rivendell; however, they are ambushed by the Nazgûl on Weathertop, and their leader, the Witch-King, stabs Frodo with a Morgul blade. Arwen, an elf and Strider's betrothed, locates Strider and rescues Frodo, summoning flood-waters that sweep the Nazgûl away. She takes him to Rivendell, where he is healed by the elves. Frodo meets with Gandalf, who escaped Isengard with help from Gwaihir the Great Eagle by asking for him with a moth. That night, Strider reunites with Arwen, and they confirm their love for each other.