Crystal Gryffindor and the New Dark Lord

Godric Gryffindor, Rowena Ravenclaw, Hegla Hufflepuff and Salazar Slytherin all had children and now their descendants have come to Hogwarts. One problem a dark power is on the rise. They meet a daughter of a Death Eater, a smart love girl,a brave girl who can be cunning and caring at the same time and a strange Malfoy. All that may and may not help them.