After the hardware store is burglarized due to Lucy foolishly leaving a key in a rock outside, she has the brilliant idea to get a goose to guard the store. But the goose never gets a chance to terrorize the burglars -- he's too busy terrorizing the store's owners.

Ted and Margo feel that Curtis and Lucy are spoiling their grandchildren too much. It doesn't help matters when Curtis begins building Kevin a treehouse, which begins a quarrel between the couple. While working on the treehouse, Lucy and Curtis decide to relieve Ted and Margo's burden by arguing over which will move out -- and Kevin walks off with the ladder, trapping them in the tree.

Curtis comes back from a Hawaiian vacation with the intention of moving in with his son, Ted, and his family. He arrives just in time to learn that his son's mother-in-law and Curtis's new business partner Lucy has moved in with the family. Crotchety Curtis is annoyed that not only does he have to put up with her shenanigans at work, but now at home as well.

John Ritter is doing a play in town, and stops into the hardware store for some antique door handles. When Lucy injures his hands and foot, she insists that John stay with her. After the lead actress drops out of the play, Lucy talks John into offering her the part of his love interest.