As the despicable Aunt Marge floats across the night sky, Harry heads off for what will become his third year at Hogwarts. A harrowing ride on the Knight Bus places him in Diagon Alley where he learns that escaped prisoner, Sirius Black is coming for him. And so the new term begins.
At Hogwarts, Harry and friends learn the delicate art of approaching a Hippogriff, how to transform shape-shifting Boggarts into hilarity and even turn back time. Soul-sucking Dementors hover over the school, threatening Harry, while a supporter of He-Who-Cannot-Be-Named lurks within the castle walls. And Harry will be forced to confront them all. Directed by Alfonso Cuaron and based on J.K Rowling's third book, this wondrous spellbinder soars with laughs, thrills and the kind of breathless surprise only found in a Harry Potter adventure - Mischief managed!