From the back of the 192-page core rulebook:
"Adventure throughout the Star Fleet Universe as a member of an elite Federation Prime Team, poised and ready to deal with any emergency. Prime Directive gives you everything you need to play the true thrill-seekers of the Federation, including:
- Historical background and rules for creating Prime Teams.
- Comprehensive background material for the Klingons, Romulans, Tholians, Gorns, Lyrans, Kzintis, WYNs, Hydrans, and more, with sections on their history and weapons!
- Two ready-to-play Prime scenarios, Web of Darkness and The Kam'srit Riddle, AND the Star Fleet Universe timeline.
The Universe is yours to explore in Prime Directive!
- Suitable for two or more players, ages 12 and older."