During the trek, Bilbo falls into a goblin cave and encounters Gollum Hobbit, The: An Unexpected Journey (Blu-ray) - Amazon.com .
Bilbo joins thirteen dwarves led by Thorin Oakenshield The Hobbit: An Unexpected Journey - Wikipedia.
Reclaim the Lonely Mountain and its lost treasure from the dragon Smaug The Hobbit: An Unexpected Journey (2012) - IMDb .