A defective lamp reveals a heartbreaking truth about what Homer believes is reality, and an AI-powered tablet befriends and controls Maggie. The Simpsons struggle to find the light through two dark tales of the curious and bizarre.
| Actor | Role |
|---|---|
 Dan CastellanetaHomer Simpson / Barney Gumble (voice) | Homer Simpson / Barney Gumble (voice) |
 Nancy CartwrightBart Simpson / Ralph Wiggum (voice) | Bart Simpson / Ralph Wiggum (voice) |
 Julie KavnerMarge Simpson / Jacqueline Bouvier (voice) | Marge Simpson / Jacqueline Bouvier (voice) |
 Yeardley SmithLisa Simpson (voice) | Lisa Simpson (voice) |
 Patti HarrisonHailey (voice) | Hailey (voice) |
 Demi MooreLydia (voice) | Lydia (voice) |
 Harry ShearerLenny Leonard (voice) | Lenny Leonard (voice) |
 Alex DésertCarl Carlson (voice) | Carl Carlson (voice) |
 Hank AzariaChief Wiggum (voice) | Chief Wiggum (voice) |
 Tress MacNeilleDr. Thurston (voice) | Dr. Thurston (voice) |
| KKai OmineSideshow Mel Cosplayer (voice) | Sideshow Mel Cosplayer (voice) |
 Chris Edgerly(voice) | (voice) |
 David Silverman(voice) | (voice) |