Following the horrifying return of Lord Voldemort, Harry finds himself completely isolated as both the Ministry of Magic and the wizarding newspaper actively campaign to discredit his claims. To maintain absolute control, the Ministry installs a cruel, bureaucratic dictator named Dolores Umbridge as the new High Inquisitor of Hogwarts, systematically banning practical magic defense training. Realizing they are being left completely defenseless against an imminent war, Harry, Ron, and Hermione form a secret, underground training group called Dumbledore's Army, pushing their magical skills to the limit to prepare for an inevitable, dark clash.