Bilbo Baggins (Martin Freeman) lives a simple life with his fellow hobbits in the shire, until the wizard Gandalf (Ian McKellen) arrives and convinces him to join a group of dwarves on a quest to reclaim the kingdom of Erebor. The journey takes Bilbo on a path through treacherous lands swarming with orcs, goblins and other dangers, not the least of which is an encounter with Gollum (Andy Serkis) and a simple gold ring that is tied to the fate of Middle Earth in ways Bilbo cannot even fathom.
The dwarves, along with Bilbo Baggins and Gandalf the Grey, continue their quest to reclaim Erebor, their homeland, from Smaug. Bilbo Baggins is in possession of a mysterious and magical ring.
Bilbo and Company are forced to engage in a war against an array of combatants and keep the Lonely Mountain from falling into the hands of a rising darkness.