Harrison Fausse and the Sorcerer's Stone (джен)

Harrison Fausse, once known as Harry Potter, is taken in by one he knows to be his own father after a horrible tragedy that gave him his lightning shaped scar. Although he doesn't know it at first, hostile authority figures control the very means of his life in a way he would never expect. While battling extensive training sessions with his mentors, bullying, trying to find common ground between his two best friends, Sean Figgis and Draco Malfoy, and his new start towards his wizarding career as a student at Hogwarts, he begins to find out the lies and the truths of the very life he lives.
 
(Basically, instead of Hagrid and Sirius, the Lucius and Snape get to Harry first and kidnap him. This leads him to live his life with an adoptive father [thinking he's his actual dad] and is trained by the deatheaters for a special purpose)