This booklet is a comprehensive adventure for Traveller titled The Secret of the Ancients. Set in the Regina subsector of the Spinward Marches, this adventure concentrates on a search for an archeological site which can reveal who the mysterious Ancients were and perhaps solve the puzzle of their history.

This adventure is the climax to a trilogy begun with Traveller Adventure 02: Research Station Gamma, and continued in Traveller Adventure 03: Twilight's Peak.