It was the morning of Christmas Eve and Phineas, Izzy, Buford and Baljeet were getting things ready for the big holiday party Ferb was setting up for everyone. Phineas asked Ferb if he had wrote his letter to Santa yet but Ferb claimed that as a man of science he doesn't even believe in Santa Claus. Shocked at this, the Team decide to prove to Ferb that there is a Santa. But just as they were about to get on the old Monorail to the North Pole, Major Monogram alerted them that Dr. Doofenshmirtz was at there as well plotting something. They relieved him that they'll keep an eye open for him. When they got to the North Pole, they found Doofenshmirtz with his latest invention: the Naughty-inator! He stated that he would use it to make all of the world appear to be naughty. The only problem was