Series 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 determined to reveal their crazy endeavors to their mom. Meanwhile, Perry the Platypus—Agent P—is called on repeatedly to save the world from 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 An original Valentine's Day-themed Phineas and Ferb 8 x 8, complete with a sheet of paper stickers and foil on the cover, is perfect for young fans of the Disney Channel’s hit animated series!