The Hobbit: The Desolation of Smaug (2013)
Beware! Here there be spoilers.
Again, in the second of the three Hobbit movies I expected the story to end the first time I watched the movie. So, as when watching the first movie I was a bit disappointed and confused the first time through. After reading the book, I watched it again, and this time I enjoyed it quite a bit more.
The Desolation of Smaug covers approximately the second third of the Hobbit movies. After their narrow escape from the orcs, Bilbo and the dwarves (again without Gandalf, who's wandered off with Radargast the Brown again) tramp through the forest, get overrun by a pack of hungry spiders and are saved/captured by wood elves led by Legolas. Bilbo manages to escape notice, and slips secretly into the elvin keep, following his captured friends.