Stan is stressed by family life so he decides to buy a hot tub for the backyard, but he becomes obsessed and when the hot tub starts singing and encourages some bad behavior they are all in trouble.

Roger becomes Steve's legal guardian, but gets a little too overzealous in the parenting department and gets Steve's BFF Principal Brian Lewis fired. After getting beat up by the other teachers at the school, Steve decides to run away. Meanwhile Stan and Francine attempt to make waves after discovering that their vacation to the biggest water park in the world fails to get their hearts pumping.