From publisher blurb:
Conquered Armies: Rules for a Pathfinder Science Fiction Campaign
provides modifications and additions to the Pathfinder core system to play a science fiction campaign set in the Conquered Armies universe. Combined with Conquered Armies Campaign: Aliens, Empires and Industry
, this material allows players to run characters as mercenaries, merchants, pirates (or both), or to explore systems in a galaxy in turmoil after the First Galactic War.
An experienced GM can develop a campaign arc based on any combination of the above material, but since the rules are designed to allow great flexibility, the GM will need to plan ahead!