Beorn helps supply the group and guide their path.
Gandalf leads the party in small groups to Beorn's house, to prepare them for traveling through Mirkwood, as he will not be joining them.
Once inside Mirkwood, the party ignores Gandalf and Beorn's warnings, and is attacked by giant spiders. Thorin is captured by wood elves, and the rest of the party eventually escapes the spiders using Bilbo's ring.
The other dwarves are captured, and once again Bilbo uses his ring to sneak past the elves, and help his companions escape.
The group comes across a cave, and Bilbo investigates. They find Smaug's lair, and Bilbo uses his ring to steal a golden cup. However, Smaug notices, and Bilbo uses more riddles to eventually calm Smaug down, and the party escapes.
Once Smaug leaves his lair again, he is killed by Bard, there are many controversies over who gets the inheritance from Smaug, and many races side with each other and this leads to the Battle Of Five Armies. During the fighting, Bilbo looses conciousness due to a rock falling on his head.
When Bilbo regains his consciousness, he learns that his side has won, however Thorin, Fili, and Kili were killed. They're burried, along with the other killed victims, and Bilbo, Gandalf, and the party return home.