Talented ten-year-olds Emily, Bella, Chloe and Grace are sick of boys who want them to be helpless princesses.

Design genius Bella Singh has built a clubhouse in her backyard, where the anti-princesses meet to thumb their noses at the notion that boys are best. But when they receive angry anonymous emails telling them to act like girls or else, followed by sabotage of their beloved clubhouse, it's clear they have a new mission. Can they unite their awesome talents to beat the bullies?