J. R. R. Tolkien's first book in the Lord of the Rings trilogy, the Fellowship of the Ring details the start of a quest to save Middle Earth from the clutches of Sauron, a power of evil who is rising again.

The tale of the Ring began in the prequel The Hobbit, wherein Bilbo Baggins, a fairly middle-aged hobbit from the Shire, embarks on a journey when 12 mysterious guests show up on his doorstep along with his friend, the wizard Gandalf. Along the way, he finds a magical Ring, which he passes on to his nephew and chosen heir Frodo in the Fellowship of the Ring.

The Ring becomes the key to the survival of Middle Earth, and with it Frodo must defend himself against the evil Sauron's Nine Riders, or Ringwraiths. To do this, he must cross the entirety of Middle Earth to Sauron's land of Mordor to Mount Doom; with him go eight others to form a company of nine, the Fellowship of the Ring, formed to help and protect Frodo in his quest.

The story of the quest is continued in the second and third books of the trilogy, the Two Towers and the Return of the King.