Harry Potter and the Dealthy Hallows is the seventh and final book in J.K. Rowlings Harry Potter series. Voldemort is continuing to accumulate power and it is up to Harry, Ron, and Hermoine to find the remaining Horcruxes to defeat him once and for all. When the Death Eaters descend upon Hogwarts, it leads to a battle that will affect the future of the wizarding world forever.
When Harry finds his old home, which is still standing, he’s surprised that the ruins are even still there. There is a plaque on the site telling about the death of Lily and James, and how he, Harry, survived the Killing Curse of Lord Voldemort.
They also are found by Bathilda Bagshot and they follow her into her home, which is very dirty and smelly. She is very old, and they figure there is no one to take care of her.
Bathilda takes Harry upstairs alone. He’s convinced that she has the sword to give him, but before he knows what’s happening Bathilda has turned into Voldemort’s snake, Nagini. The snake coils itself around Harry to keep him there for Voldemort. Hermione comes just in time to save Harry. Harry knows Voldemort is coming and that thesnake was in Bathilda the whole time, waiting for Harry to come, as Voldemort had known he would, to kill him. He narrowly escapes the snake, grabs Hermione, and they apparate moments before Voldemort gets to them. Harry's scar explodes with pain over Voldemort’s rage, and Harry doesn’t know what’s happening, or where he is, but somehow he’s reliving the night of his parents' murders. He’s seeing that night as Voldemort saw it, through his eyes.
When he comes to, Hermione tells him the worst news of all. His wand got destroyed back at Godric’s Hollow.