Three years after a tragic accident leaves a student dead at the annual Homecoming dance, a group of senior friends anxious about the return of Homecoming Night to their sleepy Southern town find themselves visited by a deadly presence from their past in the dark and desolate halls of their very own high school.

Harry, Ron and Hermione return to Hogwarts for another magic-filled year. Harry comes face to face with danger yet again, this time in the form of escaped convict, Sirius Black – and turns to sympathetic Professor Lupin for help.