If you don't follow the series, all you need to know about the last book is that the evil Voldemort has taken control of the wizarding world and government and they are hunting down the remaining good guys left fighting. Therefore, Harry and his friends hide and live on the run.
Will Harry and Hermione's new wands help them defeat Voldemort? Will Ron finally buy a reliable wand that won't snap in half (Hi-Point wands)? Will this half-movie be worth full fare? There's only one way to find out, go see the movie!
Of course this isn't the first time the Potters have stood up Voldemort. Harry's great-grandfather Daniel Craig Potter led a group of brave people to live in Defiance of Lord Voldemort and his Wizardly Third Reich: