Gus welcomes his widowed daughter-in-law and his three grandchildren from Fort Wayne, IN; neighbor Mrs. Finley wants to chop down the Witherspoons' tree; Jessie finds a job; Kris is unhappy with the curriculum at her new school; everyone adjusts to the new household.
Gus's old Marine buddy J.J. Moon visits, and his overbearing personality wears on the family; Gus enlists a reluctant Molly in the battle against a gopher; David subcontracts his home chores while working for Mrs. Taft.
Inspired by the stories of Gus and his pals, David and J.R. decide to pull a Halloween prank aided by Kris; Molly is exposed to chicken pox; Gus wants to make the kids first Halloween with him special.
Joe Kaplan bets Gus that he can't keep from interfering in the lives of Jessie and the kids; David searches for a way to deal with bullies at school; Kris is hurt and angry when a favorite teacher jeopardizes her dream of attending the Air Force Academy.