A collection of interconnected vignettes set aboard and around the LXS Archigos. Follows Ty'Sii Circean's arrival as the ship's new Second Officer, Captain McKenzie's transport flight with pilot Kaelin Dána-Tollmann (during which they're ambushed by disguised Terran forces working for Zaine), and Owen Rees's relationship with Ty.
"Nostos" — Greek for "homecoming" — frames the Archigos as a place where these characters find themselves and each other.