In the sooper triple gihoogest Codename: Kids Next Door adventure ever, an evil more eviller than Father threatens to turn both kids and adults into tapioca-eating, hideously wrinklified Senior Citizombies. To fight this menace, the Kids Next Door are forced to recommission their greatest operative ever: Numbuh Zero! Join Numbuhs One through Five and the rest of KND Global Command as they battle alongside their bygone hero to fight for not only kids...but the world!