Jean, a privileged, sometimes cruel, often insecure, and always envious girl, is accustomed to living in her glamorous older sister's shadow. So when Gil Burke, a handsome newcomer with uncertain ties to one of the most powerful families in the exclusive enclave of Sunken Haven, notices Jean, she is smitten. Then Fritz, a girl from outside the gilded gates who humiliated Jean in the island's tennis championship last year, falls for Gil herself. Soon the girls are competing for much more than a tennis trophy, with higher stakes than either of them can imagine.