The young wizard struggles to convince his fellow sorcerers that the evil Lord Voldemort has returned to life. When Hogwarts headmaster Dumbledore is ousted in favour of a sadistic replacement, Harry realises he must take matters into his own hands, uniting his fellow pupils to form a secret army and training them for the inevitable confrontation to come. Fantasy adventure sequel, starring Daniel Radcliffe, Emma Watson, Rupert Grint, Gary Oldman, Michael Gambon and Alan Rickman.