Confident senior Jo begins the new school year by breaking her own cardinal rule: don't get involved in girl drama. but when she sees timid Abby preyed upon by Queen Bee Mandi and her minions, she takes sides in a viciously funny girl-world-war that turns North Shore High School upside down.
Meaghan Jette Martin
as Jo Mitchell
Jennifer Stone
as Abby Hanover
Maiara Walsh
as Mandi Weatherly
Nicole Gale Anderson
as Hope Plotkin
Claire Holt
as Chastity Meyer
Diego Boneta
as Tyler Adams
Bethany Anne Lind
as Quinn Shinn
Patrick Johnson
as Nick 'Big Z' Zimmer
Colin Dennard
as Elliott Gold
Amber Brooke
as Violet
Juliet Kim
as Ling
Willie Larson
as May
