Based on both "Boober Gorg" and "Wembley and the Gorgs."
After being hit on the head by an exploding radish, Boober gets a case of amnesia. His friends take him out to the Gorgs' Garden, where things look so familiar that he decides that he's a Gorg. When Ma and Pa Gorg can't find Junior, they come to believe that Boober is their son transformed into a Fraggle by an evil sorcerer (whom is mentioned in "The Encyclopedia of Gorgish Myth and Wisdom" to reappear in their neighborhood on a specific day) and struggle to accept the changeling as the heir to the Universe.
- Professor Ratigan as Boober (Boober Gorg) / Wembley (Wembley and the Gorgs)
- Scar as Gobo
- Bettlejuice as Wembley (Boober Gorg) / Boober (Wembley and the Gorgs)
- Queen Chrysalis as Mokey
- Zira as Red
- Zendaya as Ma Gorg
- Dr. Facilier as Pa Gorg
- The Joker as Junor Gorg
- Randall Boggs as Buttercup
- King Candy as Doc
- Pluto as Sprocket
- The Sorcerer (mentioned)
- "Here to There"
- "Gorgs in Glory"
- "Recruiting Song (Heed the Drumbeat Now)"
- "Here to There" (Reprise)
- "Villians Rock Rock"
- The new Charecter is Buttercup.
- Junior is unnseen. He is turned into a rat by the sorcerer. He is seen in the Castle rooftops.
- The Sorcerer is mentioned.
- The movie is based on "Boober Gorg" and "Wembley and the Gorgs."
- Boober: To stay with the Gorgs (failed)
- Gobo, Mokey, Wembley, and Red: To have Boober behind bars
- The Gorgs: To keep Boober safe
- Buttercup: To have Boober behind bars wityh the Fraggles