When a ripple in time damages the future U.S.S. Enterprise, Uhura's younger self and older self have to work together to change the altered future timeline back to normal.

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

Paul Wesley (Lt. Cmdr. James Kirk)

Brian Markinson (Dr. Phil Boyce)

Alex Kapp (U.S.S. Enterprise Computer)

• The future is a year later, where Kirk is captain of the U.S.S. Enterprise. Dr. Boyce is the medical officer, and McCoy is mentioned (but not shown) as M'Benga's replacement. Ortegas has left the ship and is now teaching.
  
• Future Scotty and Uhura are in a "casual" relationship. Future Uhura and Chapel have uniforms and hair styles consistent with the Original Series.