Reilly Egg is just 12. His best friends are Chaucer's head and Mal the malevolent hedgehdog. He is the target of bullies and the sole caretaker of his grandfather. His duty is to go on missions for his art teacher Mrs. Bowen and to save the world. His newest mission is to enter the country of Bersilianda, travel through the lands of Sanc, Mort, and Enfernal and find the drogoman. His secret desire is for a real home.

The earth has been taken over by killer clouds that are eating kids and kidnapping parents for breeding. Nick, Tom and Louisa must save the day.