About Snobs and Mudbloods

Hermione embarrasses Draco in class and he wants revenge, but when he uses an old spell on her, it all goes wrong and they end up swapping their lives. So now Gryffindor mudblood Draco Granger must get pureblood Hermione Malfoy to help him reverse the spell. Problem is that nor her nor anybody else seems to notice that they swapped. What will Draco do to return to his life?