The year is 1991. Alex Clover, an orphaned girl, gets a letter telling her she's a witch, and is accepted at Hogwarts. But soon she discovers the truth; a different girl named Alex Clover was supposed to be the one to go. Refusing to turn back, Alex will do anything to stay. But how long can any Muggle - let alone a transgender eleven-year-old - avoid detection in Hogwarts?