Synopsis

News arrived that an unfamiliar planet was on a collision course with Danville. Phineas and Ferb, ever resourceful, immediately embarked on a mission to prevent catastrophe, though Buford harbored a more optimistic view, eager for first contact with the extraterrestrial inhabitants. In the midst of this planetary crisis, Dr. Doofenshmirtz plotted his usual scheme: to pilfer the world's largest ball of twine.