Remus Lupin is a werewolf. He knows that it's not exactly natural for Weres to have children. But his human girlfriend got pregnant with daughter, Kaitlyn, but she died giving birth. Remus appointed James Potter his daughters godfather and asked Lily to take care of Kaitlyn. But then Voldemort kills the Potters and leaves year old Kaitlyn for dead, until she gets taken in by the orphans of Brett's Wharf in Surrey, London. Remus has no knowledge that his daughter is alive, until a chance encounter at the Wharf (at the full moon) changes everything.