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 sells Lucy his share of the store so he can retire. Lucy goes all out for a solo-ownership celebration and winds up nearly broke. So she interviews candidates to take over Curtis' position, finally settling on Curtis -- who found retirement less satisfying than he had expected.

Lucy, jealous that everyone else in the family has a trophy to boast, is urged by Becky to join a talent show. After trying her hand at singing, dancing, telling jokes, and doing magic, Lucy finally settles on reciting a song. When she fails to win the trophy, the grandkids get her one of her own that reads "World's Greatest Grandma."