Phineas and Ferb know that with only one hundred and four days of summer vacation, you've got to make every one count! Whether they're building a rocket or discovering an ancient mummy, they're dedicated to making each mind-numbing rotation of the earth into something really special. While their sister Candace tries fruitlessly to reveal their crazy endeavors to their mom and Perry the Platypus is saving the world from the dangerous Dr. Doofenshmirtz, Phineas and Ferb are filling their days with one adventure after another.