The house of Black vs the house of Slytherin

Tom Riddle spreads the Lord Voldemort rumours while in his final year at Hogwarts. During this time he is introduced to fourth year Ravenclaw student Emilia Black and quickly becomes obsessed with her, but he won't make a move until he has rid the world of Muggles & Muggleborns and is the Minister of Magic no matter how long it takes.