Diana Tucker, a new girl at Tarenton High, thinks she should be on the squad—to fill the vacancy she's planning to cause. Suddenly, Peter is telling lies about where he's been and with whom. The head of Pompom Squad is mad at Olivia, and Tara is too busy with her new gold convertible. The cheerleaders are all too distracted to realize someone is deliberately causing trouble. Can anyone stop Diana Tucker's scheming?