Fifty years have passed since the last battle with the Dark Lord.
The chief wizard of the Wizengamot is Lucius
The president of the World Federation of Magic is Severus
Draco becomes Minister for Magic
Harry becomes Headmaster of Hogwarts
Life was too boring for them and they wanted to have some fun, so they prepared to hold another Triwizard Tournament...
Well, fifty years later, Father L and the professor have lived to old age? (Wowhohoho~)
Ah, generally everyone in the wizarding world lives to be over a hundred years old, look at that old bee... So...
(No slaps in the face~)