Massie Block: Stands at the threshold of the most ah-mazing secret room at OCD. But to prove the Pretty Committee is worthy of the honor, the girls need dates to Skye Hamilton's "famous couples" costume party. On top of all that, Massie has to convince her old crush, Chris Abeley, to be Skye's date . . . or else they can kiss the room-and their popularity-goodbye. How will she ever get her girls suitable dates and melt Chris's heart? She'd need to...

A bet about wardrobes between the wealthy Massie and middle-class Claire results in a testing of old friendships, a forging of new ones, and a change for the student body at Octavian Country Day School.

Wealthy Massie is determined to exclude middle class Claire, the daughter of her father's old friend, from her seventh-grade clique at a very exclusive private school in Westchester, New York, but after Massie steals her only friend, Claire strikes back.

Five girls in the Clique each face challenges during eighth grade -- from the soccer field to getting the key to the secret room at OCD from a Briarwood boy.