Mr. Burns goes to the Mayo Clinic for a checkup after being declared the oldest man in Springfield, leaving the Simpsons to house-sit for him and Homer to take advantage of living as a rich man. However, when Homer wants to throw a party, he goes to Moe's, where he must buy the alcohol in international waters as it is Sunday before 2 PM. There, they are captured by Chinese pirates. Later, Burns discovers that as a result of having all the existing diseases, he is perfectly healthy as all the germs simply cancel each other out. Consequently, he returns and kicks out the Simpsons, who haven't even enjoyed being rich, causing Homer to be extremely bitter and resentful.