Brooke Dennis's dream has come true. Her mother, who has been living in Paris, is moving back to Sweet Valley. When she returns, Brooke's mother has a new family-and a new career. It turns out that she is Coco, the incredible new rock singer all of Sweet Valley is talking about!

When Brooke finds out that her mom is the cool new singer, she's ecstatic-until she learns that she must keep her mother's identity a secret. Coco's agent thinks that if the public finds out that Coco has a family, it will ruin her image.

How is Brooke going to keep something so fabulous a secret especially when all of her friends are going Coco crazy?