Salazar Slytherin, one of the founders of Hogwarts School of Witchcraft and Wizardry, is the greatest dark wizard in the world. But sadly, after thousands of years, no one has succeeded the family. The great dark wizard left a lot of property behind, but no one used it.
Thousands of years ago, there was a prophecy that predicted that pure Slytherin descendants would save everything a thousand years from now, but there would be no pure-blooded Slytherins in the world a thousand years from now.
None of them knew that there was an alchemical product, a baby, in Slytherin's manor. She was sealed in the magic circle, waiting for the rotation of the gears of history, waiting for the prophecy to begin.