In an attempt to counter and eventually discredit Dumbledore, who along with Harry is the most prominent voice in the Wizarding World attempting to warn of the Dark Lord`s return, the Ministry appoints Dolores Umbridge as the High Inquisitor of Hogwarts. She transforms the school by a dictatorial regime and refuses to allow the students to learn ways to defend themselves against dark magic.Harry forms a secret study group to teach his classmates the higher-level skills of Defense Against the Dark Arts that he has learned. The novel introduces Harry to Luna Lovegood, an airy young witch with a tendency to believe in oddball conspiracy theories. An important prophecy concerning Harry and Voldemort is revealed,and Harry discovers that he and Voldemort have a painful connection, allowing Harry to view some of Voldemort`s actions telepathically. In the novel`s climax, Harry and his school friends face off against Voldemort`s Death Eaters, who include the rich and arrogant Malfoy family. The timely arrival of members of the Order of the Phoenix saves the children`s lives and allows many of the Death Eaters to be captured and imprisoned.