Harry Potter and the Prisoner of Azkaban was a fantasy novel by JK Rowling. It told the story of Harry Potter's fierce magical battle with Voldemort at Hogwarts School of Witchcraft and Wizardry. At the beginning of the story, Harry Potter's parents were killed by the evil Lord Voldemort and Harry Potter was forced to go to Hogwarts School of Witchcraft and Wizardry to study magic. At school, Harry Potter made friends with Ron and Hermione, and together they formed a three-person magic team to constantly adventure under Voldemort's pursuit. During a battle, Harry Potter learned that Voldemort's true identity was Bellatrix Lestrand, who had been a good friend of Harry Potter's parents but had betrayed him in their deaths. Harry Potter decided to go to Azkaban Prison with Ron and Hermione to find Bellatrix and rescue his old friend Cedric, who was imprisoned there. In Azkaban, Harry Potter and Cedric reunite, but they discover that Bellatrix has killed more wizards and is planning to attack Hogwarts School of Witchcraft and Wizardry. Harry Potter, Ron, and Hermione fought a fierce battle to save Harry Potter's old friend and defeat Bellatrix. At the end of the story, Harry Potter, Ron, and Hermione went to Hogwarts School of Witchcraft and Wizardry to celebrate their success. Harry Potter realized that his adventures in Azkaban had not only taught him more magic, but he had also made more friends and grown into a more powerful wizard.