Tara just wants to be treated like any other girl at Ainsley Academy. That is, judged on her merits—not on her transness. But there’s no road map for being the first trans girl at an all-girls school. And when she tries to join the Sibyls, an old-fashioned Ainsley sisterhood complete with code names and special privileges, she’s thrust into the center of a larger argument about what girlhood means and whether the club should exist...