Learning to walk in a different pair of shoes

Draco Malfoy gets bitten by Fenrir Greyback during the summer vacation of his second year of Hogwarts. It´s meant to be a punishment to Lucius for letting an important artifact of the dark lord, he was entrusted with, be destroyed, but he hides it from his parents and everyone else. Draco learns not to be prejudiced against non pure-bloods, while having to accept the fact that he is no longer pure of blood himself.