The story begins with Bilbo Baggins (Martin Freeman), a hobbit who embarks on a perilous journey with a group of dwarves, led by Thorin Oakenshield (Richard Armitage), to reclaim their treasure from the fierce dragon Smaug. Along the way, they encounter trolls, goblins, and other obstacles that test their courage and resolve. As they near the Lonely Mountain, the treasure that was once theirs becomes the focal point of a brewing war between the dwarves, humans, elves, and goblins.