For sixteen long years, Harry Potter thought he had no family that he knew of except for his horrid Aunt Petunia. Turns out he's wrong--Sirius Black and Marlene McKinnon, the two famous sweethearts at Hogwarts, actually had a daughter. Harry's younger god-sister, Sierra, resembles her father in both looks and personality. How will Harry be able to cope with this new-found discovery and family member, especially after his god-father's death?