When a sultry new woman takes up residence in his retirement home, Grandpa is determined to win her affections by impressing her with his driving skills. Grandpa convinces Homer to let him borrow the car, and he proceeds to make a mess of the town's roads. Although he impresses the new old gal, he's still forced to compete with the younger Casa Nova of the retirement home.
When the younger man takes Grandpa's new girl on a road trip, Grandpa "kidnaps" Bart, taking him on the road to win back the woman from the arms of the other man. Of course in the end, he's unsuccessful in his attempts, but he and Bart are able to bond through the experience.