Hogwarts School of Witchcraft and Wizardry is heavily under surveillance by Cornelius Fudge, Minister of Magic. New appointed professor in Defence Against the Dark Arts, Dolores Umbridge, will become new Headmaster and take over the school applying a set of severe rules with the strong point of disbelieve on Who-Must-Not-Be-Named return while Dumbledor's Army rises secretly. The Dark Forces will gain strength in the fifth part of this magical saga, Harry Potter and the Order of the Phoenix.