It's Kara's turn to host the Sleepover Squad's latest party, and she couldn't be more excited! Until her annoying brothers get wind of the event, and promise they're going to play all kinds of practical jokes on the Squad. That is, unless Kara agrees to be their slave. Oh no! Poor Kara is running herself ragged trying to keep up with her rotten brothers' demands, without letting her friends find out. She's worried her pals won't want to come to her house—or, worse, that they'll want to disband the Squad!
But when the rest of the Squad finds out what's going on, they tell Kara to quit being the boys' slave and relax. After all, no matter what those creeps can do to them, these girls know something the boys don't: getting mad isn't the same thing as getting even....