When an old enemy resurfaces as an existential threat to the Federation, Nahla must outwit a vengeful foe with a personal vendetta against her — as the cadets and instructors undertake a dangerous, seemingly impossible, mission to save everyone and everything they hold dear.

Holly Hunter (Captain Nahla Ake)
Sandro Rosta (Cadet Caleb Mir)
Karim Diané (Cadet Jay-Den Kraag)
Kerrice Brooks (Cadet SAM)
George Hawkins (Cadet Darem Reymi)
Bella Shepard (Cadet Genesis Lythe)
Zoë Steiner (Cadet Tarima Sadal)
Oded Fehr (Admiral Charles Vance)
Gina Yashere (Lt Commander Lura Thok)
Brit Marling (Main Computer voice)
Stephen Colbert (Digital Dean of Students voice)
Tig Notaro (Commander Jett Reno)
Robert Picardo (The Doctor)

Tatiana Maslany (Anisha Mir)
Paul Giamatti (Nus Braka)

Ivan Wanis Ruiz (Venari Ral Soldier)
Piotr Michael (Venari Ral Computer)