With a school dance quickly approaching, Kacey needs to make sure she outshines her arch nemesis Molly. She sends Stevie undercover to infiltrate the Perfs, but Stevie has a plan of her own when she realizes she's being used.

Kacey and Nelson have the same birthday, so Kacey decides to share her birthday party with him. But in planning the party, Kacey ignores Nelson's input, leaving him feeling hurt, and her feeling like a bad friend.