Fifty-one years into its journey into space, a murder occurs on the spaceship Ascension, prompting an investigation.

The murder mystery deepens, and the investigation threatens to expose secrets about Project Ascension.

More light is shed on Christa, while Viondra uses a power surge to her advantage; Duke leaves Emily when she confirms her affair with Gault.

The pressure mounts on Enzmann when a government investigator intervenes; Viondra smells a rat among her stewardesses.

Lorelei reveals a secret from beyond the grave that disrupts Ostara and provokes a power struggle on Ascension.

Christa's powers create chaos on Ascension and Globus, allowing Krueger and Stokes to escape.