What's going on?

I am sat here watching my first Harry Potter film, not really paying attention and thus not having a clue what's happening. So far, some woman grew really fat and drifted away, London Transport gave a demonstration of a typical bus ride through rush hour London and those black horses and their riders from the Lord of the Rings scared young Harriette and his/ her chums. I am unconvinced so far, particular as they keep mentioning Azerbaijan and Harriette increasingly looks like Maureen Lipman (below).















I suspect the twist at the end might be that Maureen Lipman is actually Hariette, and whilst on a peace keeping mission to Azerbaijan, her wand gets stolen and she saves the day by using traditional Jewish humour to span the gulf between the cultures.

I think what actually does happen will be a disappointment to me now...