Now here...the final Potter book has arrived. It is one of the most interesting books in the series. The story of this book goes like this:
Harry Potter is finally freed from the Dursley home.He faces the first attack from Voldemort while on his way to ''The Burrow''. His loved owl Hedwig dies during this short battle. When he finally reaches ''The Burrow'',he is struck by another tragedy-Mad Eye Moody''s death during the same battle.
He then sets out for his journey to find the horcruxes of Voldemort along with Ron and Hermione. He faces a lot of problems including a fight with Ron which spoils his peace.But Ron will come back to give a shoulder to his friend. They then destroy the locket horcrux(mentioned in the 6th part) with the sword of Gryffindor. But the 3 friends will be caught by the warewolf Fenrir Greyback who takes them to Malfoy Manor where Voldemort is currently living.The Ministry will be taken over by Voldemort and this adds to more trouble. Harry and his friends escape from the Malfoy residence seizing Bellatrix and Draco''s wand since Harry''s own wand will be broken during another encounter with The Dark Lord.The house elf Dobby helps him the most during this escape.But alas! Dobby is killed by Bellatrix.
The next horcrux is a small golden cup of Helga Hufflepuf. This will be present in the Gringotts vault of Bellatrix Lestrange.Harry seizes this cup from the vault with the help of a goblin.Harry then gets to know that another horcrux is present in Hogwarts.So he sets off to Hogwarts along with Ron and Hermione. At Hogwarts, all the students and professors agree to help Harry in his fight against Voldemort.The entire Hogwarts will be fighting against the Death Eaters while Harry,Ron and Hermione will be searching for the next horcrux which is a Tiara of Rowena Ravenclaw.He finally finds and destroys it. Later,Harry will see Snape and Voldemort conversing.Voldemort kills Snape to win over his wand which is an Elder Wand (this wand always gives victory to its owner no matter what the situation is) and is one of the deathly hallows. There are 3 deathly hallows, the first one being the Elder Wand, the second one being the Resurrection Stone and the third one being the Invisibility Cloak.The person who owns all the three combined will be eternal.
The story then goes on with Snape''s memories which he gives to Harry during the time of his death. After seeing those, Harry will come to know that Snape was in love with Harry''s mother,Lily Potter and hence joins hands with Dumbledore to save her life.He also discovers that Dumbledore wanted Snape to kill him and it was not a cruel act by Snape.
Harry finds out that he is the 7th horcrux and has to destroy himself in order to finish off Voldemort completely.So he goes to Voldemort and surrenders. Voldemort utters the killing curse and everything goes blank for Harry. He meets Dumbledore at an imaginary place where dumbledore tells him that he is not dead but he has lost that part of his soul which formed the horcrux.He then comes back to reality. But Voldemort thinks that Harry is dead and takes his body to Hogwarts to show everyone that he has won.
But to his utter amazement, Harry stands up and begins to fight with him.The crowd which was till then grieving over Harry''s death will start rejoicing. Bellatrix is killed by Ron''s mother and then finally Harry kills Voldemort with the help of the Elder Wand.
Harry is then married to Ginny and will have 3 children- James, Albus and Lily.
Ron is married to Hermione and will ahve two children.
The book ends with Harry and Ginny bidding good-byes to his children who are leaving to Hogwarts from the railway station.