A different path (Paused)

The story starts in 1975 and a change in events change the future which no longer exists.

This slightly differs from canon

The Avengers travel back in time and end up in 1991 in front of Persephone and Severus's house.
Times are drastically changing and the death eaters have to go into hiding. Persephone and Severus are expected back at Hogwarts to resume teaching.
Sirius, Regulus, James are alive throughout this story