"The Hobbit: An Unexpected Journey" follows the story of Bilbo Baggins (Martin Freeman), a hobbit who lives a quiet life in the Shire. However, his peaceful existence is disrupted when the wizard Gandalf (Ian McKellen) and a group of dwarves, led by Thorin Oakenshield (Richard Armitage), arrive at his doorstep. The dwarves are on a quest to reclaim their treasure, stolen by the dragon Smaug, and they need Bilbo's assistance to navigate the perilous journey to the Lonely Mountain.