Stan befriends a Mormon boy and his family.
"All About Mormons" contains examples of:
- Decon-Recon Switch: Most of the episode mocks the story of Joseph Smith and Mormonism's founding (with the implication that Smith made it all up just to make money). However, the episode ends with Gary telling Stan that even if Smith did make it all up, Mormonism still promotes good values and his family is happy, loving and functional thanks to them following the religion's teachings.
- Only Sane Woman: In the story of Joseph Smith, Lucy Harris is the only one who realizes Smith is likely making it all up.