Harry (Daniel Radcliffe) goes to Hogwarts for the fifth year. He's shocked to find out that most of the wizarding world and especially the Ministry of Magic refuse to believe that Lord Voldemort (Ralph Fiennes) is back. The Ministry sends in Dolores Umbridge (Imelda Staunton) as the Defence Against the Dark Arts teacher. Dolores seems to think that just the theory on the subject should suffice....

Harry (Daniel Radcliffe) goes to Hogwarts for the fifth year. He's shocked to find out that most of the wizarding world and especially the Ministry of Magic refuse to believe that Lord Voldemort (Ralph Fiennes) is back. The Ministry sends in Dolores Umbridge (Imelda Staunton) as the Defence Against the Dark Arts teacher. Dolores seems to think that just the theory on the subject should suffice. Arguing with her lands Harry in a load of trouble. That's when Harry and his friends come up with the idea of putting together Dumbledore's Army.