SPOILERS:

Both Harry and Voldemort wake up in the Forbidden Forest. Harry plays dead as to not alert the Death Eaters. Hagrid is forced to take Harry’s "corpse" back to Hogwarts, where Voldemort displays him to the defenders of the castle, in an attempt to break their will to resist. Neville steps forward to challenge Voldemort, who Body-Binds him and puts the Sorting Hat on him to make a point. Neville pulls Gryffindor’s sword out of the Hat and kills Nagini when Voldemort is distracted by the arrival of the centaurs. Harry reveals himself to everybody, and the battle rages onwards yet again. Voldemort and Harry duel each other in the Great Hall. Harry reveals everything to his enemy and eventually overpowers the once unkillable Voldemort. Harry returns the Elder Wand to its rightful owner.