Harry Potter discovers that a risky man, Sirius Black, has gotten away from Azkaban and is supposedly after him. With his closest companions Ron Weasley and Hermione Granger, Harry learns and experts the spells and abilities expected to stand up to Black. Notwithstanding, the truth of the wrongdoing that Black was blamed for, the homicide of thirteen individuals twelve years earlier, gets to be clear as the genuine killer, Peter Pettigrew, is found to be secluded from everything in the mask of Ron's pet rodent, Scabbers. Together with Professors and Hermione unmask Pettigrew, just to have him escape.

Utilizing Hermione's Time-Turner, Harry and Hermione do a reversal in time and salvage Buckbeak and utilization him to save Sirius Black and himself from the repulsive destiny of a Dementor's Kiss. As in the first battle, A Dementor gets Harry and raises his face to the Dementor's hood, yet as it was endeavoring to perform a kiss, the future adaptation of Harry summons a Patronus and begins a second battle.