Harry Potter und der Gefangene von Askaban

This time, everything goes so wrong during the holidays that Harry has to fear being thrown out of Hogwarts because he has cast a levitation spell on his insufferable Muggle aunt Magda and then simply left. While he is still imagining a life as an exile, the Ministry of Magic catches him and, to his own astonishment, he ends up in the castle just in time for the start of school. But now the trouble really starts...