You use a time-turner and accidentally go back too far. You are back at Hogwarts when Tom Riddle is just starting his following, and Abraxas Malfoy is one of the original few followers along with Mulciber. Since you are sorted into Slytherin, you now have to figure out how to navigate the past in Slytherin as Abraxas Malfoy and Tom Riddle are now your classmates until you can fix the time turner. Abraxas turns to you as he speaks with Tom, Who are you?