Lady Hogwarts's Alternate Dimension Books

Harry Potter, Cedric Diggory, Viktor Krum, Fleur Delacour, Ludo Bagman, and Bartemius Crouch are kidnapped by Lady Hogwarts to read books, from the POV of Harry Potter about the past, present, and future. All of the students and staff of Hogwarts, some Ministry officials, some goblins, and the champions families, blood or not are being forced to watch them. What will be found out?