Buffy Summers was born the elder sister of Harry Potter and given up for adoption. Twenty years later while going through Joyce's effects after her death, Buffy finds her adoption papers and taking Dawn along, goes in search of her birth family.
Goddess Dawn asks the Ascended God Harry Potter to help set up her own little adventure in Sunnydale where she can have fun and no one can interfere, while also getting revenge on her sister at the same time. Starts from Dawn's perspective then moves onto Harry's, then both; Sam and Janet from Stargate SG1 make a short appearance.