Otto, Martha and Scarlett Crumb think things can't get any worse when they meet Aunt Beastly ... but then the Unstoppables, a notorious gang of robbers, set their sights on their father's invention, and it seems they'll stop at nothing to get their hands on it...

Otto, Martha and Scarlett Crumb think things can't get any worse when they meet Aunt Beastly ... but then the Unstoppables, a notorious gang of robbers, set their sights on their father's invention, and it seems they'll stop at nothing to get their hands on it...