Not all Slytherins are bad

Voldemort has died thanks to Neville Longbottom (Boy-Who-Lived). However many people lost their lives during the war, so Minister Cornelius Fudge came up with a plan called The Population Plan. What happens when the 5 coldest snakes of Slytherin turn out to be not so bad and become the wizarding world's heroes? Discl...