Ruby and Garnet are ten-year-old twins. They're identical, and they do EVERYTHING together, especially since their mother died three years earlier - but they couldn't be more different. Bossy, bouncy, funny Ruby loves to take charge, and is desperate to be a famous actress, while quiet, sensitive, academic Garnet loves nothing more than to curl up with one of her favourite books. And when everything around the twins is changing so much, can being a double act work for ever?
Shy, mild Mandy has been bullied at school for as long as she can remember. That's why she is delighted when cheeky, daring, full-of-fun Tanya picks her as a friend.
Mum isn't happy - she thinks Tanya's a BAD GIRL and a bad influence on her daughter. But Mandy loves spending time with her brilliant new friend, and is sure Tanya can only get her out of trouble, not into it . . . or could she?