Siblings Wednesday and Pugsley Addams will stop at nothing to get rid of Pubert, the new baby boy adored by parents Gomez and Morticia. Things go from bad to worse when the new "black widow" nanny, Debbie Jellinsky, launches her plan to add Fester to her collection of dead husbands.

Two cops investigating the murder of a young boy become invloved in a very secret project involving alien life. Needless to say, the authorities don't want them to stick their noses into this