Hobbit muda Frodo Baggins, setelah mewarisi cincin misterius dari pamannya, Bilbo, harus meninggalkan rumahnya agar tidak jatuh ke tangan penciptanya yang jahat. Sepanjang jalan, persekutuan dibentuk untuk melindungi ringbearer dan memastikan bahwa cincin itu tiba di tujuan akhirnya: Mt. Doom, satu-satunya tempat di mana ia bisa dihancurkan.
Immediately after the events of The Desolation of Smaug, Bilbo and the dwarves try to defend Erebor's mountain of treasure from others who claim it: the men of the ruined Laketown and the elves of Mirkwood. Meanwhile an army of Orcs led by Azog the Defiler is marching on Erebor, fueled by the rise of the dark lord Sauron. Dwarves, elves and men must unite, and the hope for Middle-Earth falls into Bilbo's hands.
The Dwarves, Bilbo and Gandalf have successfully escaped the Misty Mountains, and Bilbo has gained the One Ring. They all continue their journey to get their gold back from the Dragon, Smaug.
The Fellowship of the Ring embark on a journey to destroy the One Ring and end Sauron's reign over Middle-earth.