During the school day, fifth-grader Allie West is an outsider. Everyone
knows the principal's kid might tattle to her mom! But after school,
Allie is an insider. She's friendly with the janitor, knows the shortest
routes around the building, and hangs out with the Afters, a group of
misfits whose parents are teachers at their school. Although Allie
secretly loves her insider life, she's sick of being an outsider--so she
vows to join the Pentagon, the popular math team led by her ex-best
friend. But can Allie change her status without betraying where she
really belongs?