Chrissa's had a good summer.

She's been swimming at the lake and practicing her dives for swim-team tryouts, and she's looking forward to fifth grade. But when Chrissa and her friends start getting mean text messages and spam e-mails, and there is a cruel posting on the swim club website, it's hard to know who to trust.

As if the cyberbullying wasn't bad enough, a serious accident at the pool turns Chrissa's world upside down. Who is behind all the mean messages? And what can one girl do to put an end to the bullying?