Mickey is angry all the time: at his divorced parents, at his sister, and at his two new step-mums, both named Charlie. And so he can't resist the ad inside his pack of gum: "Do you ever wish everyone would go away? Buy The Anti-Book! Satisfaction guaranteed." He orders the book, but when it arrives, it's blank - except for one line of instruction: To erase it, write it. He fills the pages with all the things and people he dislikes...

Next thing he knows, he's wandering an anti-world, one in which everything and everyone familiar is gone. Or are they? His sister soon reappears - but she's only four inches tall. A tiny talking house with wings looks strangely familiar, as does the mysterious half-invisible boy who seems to think that he and Mickey are best buds. The boy persuades Mickey to go find the Bubble Gum King - the king, who resides at the top of a mountain, is the only one who might be able help Mickey fix the mess he's made.