Frodo and Sam capture Gollum and have him take them to Mordor. They are captured by Faramir, but he lets them go. Aragorn, Legolas and Gimli go to Fangorn Forest in pursuit of Merry and Pippin and find Gandalf, who has been reborn. At the Battle of Helm's Deep, all looks lost until Gandalf and the Riders of Rohan charge from nowhere into the Uruk-hai and kill them. Merry and Pippin are taken care of by Treebeard the Ent. The Ents decide to attack Saruman for killing trees. They wash away all his work and renders him helpless. Arwen decides there is no reason for her to stay in Middle-earth, so she begins to leave.