It's the night before Christmas and Phineas, Ferb, and the rest of the gang are filled with holiday cheer, but little do they know that Santa and his elves were told that every child in Danville is on the naughty list.
Phineas and Ferb construct a haunted house to scare away Isabella's hiccups, but their werewolves, vampires, and other frights might turn out to be too scary.
Debbie and Eliza Thornberry learn a lesson about responsibility after each tries to pass a babysitting duty on the other in order to enjoy activities on the South Pacific island of Bora Bora.
Jack Sparrow makes a desperate attempt to find the key to the treasure chest that held the heart of Davy Jones in order to break the curse he had made with Jones thirteen years earlier.
When Angelica and the babies play 'dare' Angelica has to be nice all day and will get the babies ice cream. This works until the bully McNulty brothers arrive and Angelica is the only one who can stand up to them.