The U.S.S. Enterprise becomes stuck in a nebula that is home to an alien consciousness that traps the crew in a fairy tale.

Anson Mount (Captain Christopher Pike)
Ethan Peck (Lieutenant Spock)
Jess Bush (Nurse Christine Chapel)
Christina Chong (Lt. La'an Noonien-Singh)
Celia Rose Gooding (Cadet Nyota Uhura)
Babs Olusanmokun (Dr. Joseph M'Benga)
Melissa Navia (Lt. Erica Ortegas)
Bruce Horak (Lieutenant Hemmer)
Rebecca Romijn (Lt. Commander Una Chin-Riley)

Sage Arindell (Rukiya M'Benga)
Belinda Corpuz (Patient)
Rong Fu (Lt. Jenna Mitchell)
Alex Kapp (U.S.S. Enterprise Computer)
Makambe Simamba (Adult Rukiya)

• "The Elysian Kingdom" is the book M'Benga has been reading his daughter. The alien consciousness pulled the story from Rukiya's mind.
  
• M'Benga and Hemmer are the only two on the ship who retained their memories.
  
• When Hemmer's mind was initially probed, he was able to block it because of his telepathic abilities.
  
• The alien offers to let Rukiya's consciousness join with her, which would allow her to live for eternity, but only as a consciousness in the nebula. Rukiya decides to remain with the alien, whom she names Debra after her mother.
  
• No one remembers what happened in the missing five hours except for Dr. M'Benga.
  
• Dr. M'Benga's first name is revealed to be Joseph.