During the battle at the Department of Mysteries, Hermione is knocked unconscious. When her old DADA professor wakes her up, and tells her to run, she takes off and goes through an unfamiliar door. Little did Hermione know, the door she goes through sends her 20 years into the past. Eventually RL/HG.

AU. Harry didn't go to Hogwarts, he went to Stonewall Secondary. His main goal in life was to leave the Dursleys' and go to college, until Remus Lupin finds him on his seventeenth birthday and his life changes all at once. See Ch 1 AN for more info.