After a high-profile mission goes awry, Boimler is further plagued with self-doubt when Mariner proves herself to be a more naturally talented sci-fi badass than he. Rutherford quits his job in engineering and explores other departments on the U.S.S. Cerritos.

Tawny Newsome (Ensign Beckett Mariner)
Jack Quaid (Ensign Brad Boimler)
Noël Wells (Ensign D'Vana Tendi)
Eugene Cordero (Ensign Sam Rutherford)
Dawnn Lewis (Captain Carol Freeman)
Jerry O'Connell (Commander Jack Ransom)
Fred Tatasciore (Lieutenant Shaxs)
Gillian Vigman (Dr. T'Ana)

Jess Harnell (General K'orin)
Tom Kenny (Quimp)
Kari Wahlgren (Anabaj Female)
Jessica McKenna (Cerritos Computer)
Ryan Ridley (Bajoran Crewman)
Paul Scheer (Lt. Commander Andy Billups)

• Rutherford ultimately ends up back in Engineering, despite doing well in Shaxs's security test against a simulation of holographic Borg.
  
• Dawnn Lewis (Captain Carol Freeman) does not appear in this episode.