Harry recalls that a pale little girl called Sally-Anne was sorted into Hufflepuff during his first year, but no one else remembers her. Was there really a Sally-Anne? Harry and Hermione set out to solve the chilling mystery of the lost Hogwarts student.

Fred accidentally starts rumors that he's with Hermione, and encourages them for a laugh. When she find out, she's furious. Now the two of them are fighting to outembarrass and annoy one another... but they're also fighting their feelings for each other.