In Harry Potter and the Prisoner of Azkaban; Harry; Ron and Hermione; now teenagers; return for their third year at Hogwarts; where they are forced to face escaped prisoner; Sirius Black; who poses a great threat to Harry. Harry and his friends spend their third year learning how to handle a half-horse half-eagle Hippogriff; repel shape-shifting Boggarts and master the art of Divination. They also visit the wizarding village of Hogsmeade and the Shrieking Shack; which is considered the most haunted building in Britain. In addition to these new experiences; Harry must overcome the threats of the soul-sucking Dementors; outsmart a dangerous werewolf and finally deal with the truth about Sirius Black and his relationship to Harry and his parents. With his best friends; Harry masters advanced magic; crosses the barriers of time and changes the course of more than one life. Directed by Alfonso Cuaron and based on J.K. Rowling's third book; this wondrous spellbinder soars with laughs; and the kind of breathless surprise only found in a Harry Potter adventure.