Fantastic Four

McGonagall is about to retire when she hears that Albus Potter, Scorpius Malfoy and Rose Weasley are going to have their school year together. She then decides that her retirement can wait because there is no way she's going to miss it. What she doesn't know though, she's going to witness the birth of the new Marauders - or what they'll be known later as the Fantastic Four.