No longer feeling needed around the Brady household, Alice makes up a story about an ailing aunt in Seattle in order to leave. Later the family finds out the truth and put "Operation Alice" in effect in an attempt to make her stay.

With more and more of the girls belongings being moved over from storage, the boys become fed up and take to their 'No Girls Allowed' clubhouse in the backyard which sparks the first of many battles between the sexes. This leads the girls to try to build their own clubhouse.