Milton Worthy and his family are off on a vacation to Super Fun World. It’s a week filled with roller coasters, rides, and fried food – and no super-sub missions for seven whole days. Everything is going according to plan until Milton gets stuck looking after Noah—part-time classroom pet, full-time evil mastermind—who has an entirely different kind of get-away in mind. Will Milton be able to figure out Noah’s latest plot for world domination before it ruins his family’s fun time? S.O.S: SOCIETY OF SUBSTITUTES #4: SUPER FUN WORLD is the fourth book in a hilarious new chapter book series from beloved author of the Silly Dilly songbooks and The Day the Mustache Took Over series, Alan Katz, and illustrated by beloved artist Alex Lopez. It’ll have even the most reluctant readers clamoring for more adventures.