James Potter returned home after his fourth-year to find a crazy old man with a lightning bolt scar on his head. Instead of the old man telling him anything, because he is crazy of course, the old man kidnaps him and takes him to Antarctica, where he then tells of the wars to come, and how James will be the one to stop them. While James just wants to play pranks, get some snogs, and win the Quidditch Cup he also wants to protect his friends from the dangers of the future. Even when some of them were the ones who were the danger.