My take on how events may pan out in book seven. Spoilers from all previous HP books.
The events of the previous year have brought home to Harry the realization of what has to be done, and the knowledge that it must be done alone. Now as he sets off on his final quest, making new acquaintances along the way, he must bring all his knowledge and skill to bear in his effort to destroy Lord Voldemort. But will it be enough, or is there something that he has missed which might prove to be his undoing?