The rebellion begins! Lord Voldemort has returned, but the Ministry of Magic is doing everything it can to keep the wizarding world from knowing the truth - including appointing Ministry official Dolores Umbridge as the new Dark Arts professor at Hogwarts. When Umbridge refuses to teach practical defensive magic, Ron and Hermione convince Harry to secretly train a select group of students for the wizarding war that lies ahead. A terrifying showdown between good and evil awaits in this enthralling film version of the fifth novel in J.K. Rowling's Harry Potter series. Prepare for battle!