User blog comment:Redgarlic68/‘Phineas And Ferb’ Creators Sign Deals With Disney For Series, Feature, Potential Spinoff/@comment-75.42.222.104-20110828052152/@comment-3212462-20110830001809

It could be about the alternates before the movie takes place. Like a fireside girl spinoff... Except with the firestorm girls and alternate Candace instead.