It was 1972 in Hogwarts. You were with your Best Friend Narcissa Black and Sirius Black. Sirius was your enemy, he always made fun of you and Narcissa. But back then, Narcissa wasn't that cold. She was kind and the most close friend to you, and never made fun of anyone. In Hogwarts, You and her found a Time-Turner. You accidentally go back to the future to the year 1992 with her, where Harry Potter was. You had no idea who was he and who were his friends. You accidentally bring Young Sirius Black, who was there with you the whole time. Same with Narcissa Black Malfoy. And somehow... Tom Riddle when he was a student. You and Narcissa, Sirius had no idea who he was. Everyone was in their sixth year at Hogwarts, but from different time.