From ebgames.com:

Holy smokes! 'Da Rules' book (the ultimate guide to owning fairy godparents) has disappeared and left Cosmo and Wanda without their magical power! In this platfrom adventure Timmy Turner will do the unthinkable as he travels everywhere from the comic book world to the interior of Vicky's nose! He'll battle evil viruses and dodge menacing BOY-EATING PLANTS all to come to the rescue of his wacky fairy godparents. Join Timmy on an amazing adventure to recover all the pages from 'Da Rules' book and restore Cosmo and Wanda's powers. Will Timmy save his fairy godparents or will he live the rest of his life as (gasp!) an ordinary boy?