Series Description: Best friends and stepbrothers Phineas and Ferb are determined to make each mind-numbing rotation of Earth into something special. But their sister, Candace, is relentless in her efforts to reveal their crazy endeavors to their mom. Meanwhile, Perry the Platypus-Agent P-is called on repeatedly to save the world from the dangerous Dr. Doofenshmirtz. Spend some time with Phineas and Ferb and see just how exciting and outrageous a summer's day can really be! Title Description: Dr. Doofenshmirtz's Guide to Conquering the Tri-State AreaJoin Dr. Doofenshmirtz in this hilarious chapter book packed with cool illustrations, crazy plots, wacky ideas, and devious diagrams, and find out how he plans to conquer the tri-state area and finally defeat Agent P!