The Hobbit 2: The Desolation of Smaug
After successfully crossing over (and under) the Misty Mountains, Thorin and Company must seek aid from a powerful stranger before taking on the dangers of Mirkwood Forest–without their Wizard. If they reach the human settlement of Lake-town it will be time for the hobbit Bilbo Baggins to fulfill his contract with the dwarves. The party must complete the journey to Lonely Mountain and burglar Baggins must seek out the Secret Door that will give them access to the hoard of the dragon Smaug.
Where has Gandalf got off to? And what is his secret business to the south?