After a summer of isolation and denial, Harry Potter returns to Hogwarts to find the Ministry of Magic refusing to believe that Lord Voldemort has returned. The sinister Dolores Umbridge is appointed Defense Against the Dark Arts teacher, gradually seizing control of the school and banning practical magic lessons. In response, Harry secretly forms "Dumbledore's Army," teaching fellow students to defend themselves. Plagued by disturbing visions through his psychic connection with Voldemort, Harry is lured to the Department of Mysteries, where a fierce battle erupts. There, tragedy strikes with the death of his beloved godfather, Sirius Black, changing Harry forever.
