"Voldemort's power is growing stronger. He now has control over the Ministry of Magic and Hogwarts. Harry, Ron, and Hermione decide to finish Dumbledore's work and find the rest of the Horcruxes to defeat the Dark Lord. But little hope remains for the Trio, and the rest of the Wizarding World, so everything they do must go as planned."
(Above taken from this page. WARNING: link may contain spoilers).
I thought this was the best of the movies. I previously prefered the first two, but as this movie stayed closest to the book, I think this is currently the best of the Harry Potter movies. Some parts were changed, left out, or ffiddled with. But the movie was - as I already mentioned - closer to the book than the others have been. Definately a fantastic movie!