Bart becomes addicted to junk food when a new vending machine is installed at Springfield Elementary. His steady diet of processed foods leads to a massive weight gain and health issues. When he's unable to stick to his prescribed low-fat diet, the Simpsons stage an intervention and ship Bart off to "Serenity Ranch - A Forced Starvation Facility," headed up by former food addict Tab Spangler. While Spangler tries to help Bart overcome his obsession, Homer and Marge turn their home into a hostel for German travelers in order to pay for the costly Serenity Ranch.
Guest Cast
Cast Appearances
![Homer Simpson](https://static.tvmaze.com/uploads/images/medium_portrait/0/2107.jpg)
Dan Castellaneta
voices Homer Simpson![Marge Simpson](https://static.tvmaze.com/uploads/images/medium_portrait/497/1243770.jpg)
Julie Kavner
voices Marge Simpson![Bart Simpson](https://static.tvmaze.com/uploads/images/medium_portrait/0/2193.jpg)
Nancy Cartwright
voices Bart Simpson![Lisa Simpson](https://static.tvmaze.com/uploads/images/medium_portrait/497/1243772.jpg)
Yeardley Smith
voices Lisa Simpson![Krusty the Klown](https://static.tvmaze.com/uploads/images/medium_portrait/0/2201.jpg)
Dan Castellaneta
voices Krusty the Klown![Mayor Quimby](https://static.tvmaze.com/uploads/images/medium_portrait/0/2192.jpg)
Dan Castellaneta
voices Mayor Quimby![Gil Gunderson](https://static.tvmaze.com/uploads/images/medium_portrait/497/1244765.jpg)
Dan Castellaneta
voices Gil GundersonEpisode Discussion
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