After the ride on Buckbeak to save Sirius, Harry and Hermione discover just how much their Machiavellian manipulative headmaster enjoyed messing with the lives, and made fools of, Fudge, Snape, Sirius, Harry and Hermione. As per Canon. But Harry has his Hermione and they win. MoF Dumbledore. Ronald corrected and everyone not associated with the dark lord got their happy ever after.