A "Fearsome Foursome" of high school girls with wicked gossip and backstabbing on their minds makes a bet that whomever brings down one of their rivals will get to have the hot new single guy. Sally arranges to speak to all of her exes to discover why her current guy, Stan, might be thinking of breaking up with her, and the first on the list is the sexual stamina king, Jake. Emma and Brian discover that their last bout of sex-with-sock-puppets accidentally went out over the internet via her Web site.

To win a competition to bring down popular rival Jeanine, Liz steals her diary, which contains some pretty nasty revelations that threaten the Fearsome Foursome. Sally interviews Bill, a boy who suddenly dumped her for a trip to Fiji, and finds out that he still loves her. When Brian can’t have sex with Emma without his sock puppet, she decides to hide "Mr. Fuzzy."

The Fearsome Foursome find more nasty revelations about themselves in the diary stolen from their archenemy--but who is the snitch who sold their secrets? Still trying to discover why her boyfriend Stan may want to break up with her, Sally springs an interrogation on the delivery guy and almost drives him to a breakdown. Emma finally adapts to Brian’s use of a sock puppet for sexual communication with her, but she won’t tolerate him using it with anyone else, especially the free-thinking Kiki.

Stacey and Debbie trap their intended date for the dance, Jonas, in a revealing game of Truth or Dare, and Liz tries to rope her sister's boyfriend Kyle into the game. Stan unexpectedly comes back from San Francisco a day early, and finds his girlfriend Sally interviewing her boyfriend from elementary school, Chuckie. Dean has a co-ed bathroom romance going with Claire, but he's frightened of their growing intimacy because he's still a virgin.