5th year, Dudley is kissed by a dementor. Harry flees to diagon, to avoid certain death. He learns his magical guardian is Albus Dumbledore, who should have long since removed him from the Dursleys. Dumbledore will send him back, and force him to fight Voldemort, no matter how much he begs. He needs a new guardian. Problem. His fate is in the hands of none other than Draco Malfoy.