Knuckle and Potty are tired of being lovable book characters. Together, they hatch a plan to venture to the Outer-world by clicking their heels and leaping off the pages into real life to confront the author and illustrator who created them. When that plan fails, a trip to Happy World is their last option. Simple: they'll just erase Happy World with their de-zonker contraptions. Little do Knuckle and Potty know that Happy World isn't as happy as they think.