After finding out that he has a twin sister, Harry Potter must travel to America to find her, make her believe in magic and bring her back to Hogwarts. But this is easier said than done. Trouble lies ahead, and it ranges from living a complicated muggle High School life where everyone seems to follow a certain code, to the ever-present possibility of being attacked by death-eaters. Harry, Ron, Hermione, Ginny, Neville and Luna will face more challenges than they thought.