Young jazz Marsh is a Random Were - her kind Turn into the last warm-blooded creature they see when the Turn is upon them She is triggered into an unexpected Turn... when the only such creature happened to be her best friend... so she Turns into a Boy. Th between trying to come to terms with this and all that it entails, she also discovers that her older sister's death (after she had gont through some tough times at her school, being bullied by the kids and discriminated against for being Were by a bigoted teacher) was not what she had thought - and some dark family secrets come to light.