Draco et Serpens

Narcissa Malfoy never expected to save the world. In fact, she doesn't even remember it, and neither does anyone else. This is a society where secrets are hidden, a small band of renegades is trying to bring down Dumbledore, and the ancient books should be read more. Oh, and magic seems to be alive. Draco and his unusually dark haired twin are in for an interesting education...