On the morning of his thirteenth birthday, Harry potter learns that mass-murderer Sirius Black has survived his first two years at Hogwarts; now it looks as though Sirius Black is determined to make sure Harry doesn't his third.
Selama 12 tahun, Penjara Azkaban sebuah kota kubu sihir yang menggerunkan telah memenjarakan banduan palingmkejam, Sirius Black. Ahli sihir itu penyokong kuat Raja Kuasa Jahat, Lord Voldemort telah berjaya melarikan diri dari penjara dan kini sedang memburu Harry Potter utk membalas dendam atas kejatuhan tuannya.