From the book text:
This supplement contains complete descriptions of four plots that overlay the northern part of the Triangle, each involving a different major power in some way.
This product contains virtually no statistical information about any of the worlds mentioned, about the governments mentioned, or about the personalities that inhabit the Triangle that are not directly connected to the plots described herein. The FASA product The Triangle contains all the details of the physical setting required for the campaign. Whereas it would be possible to use this campaign world without this supplement, it would be difficult, and probably not satisfactory. It is strongly recommended that the gamemaster who desires to run The Triangle Campaign purchase the companion product.
The bulk of this book deals with the four plots of the campaign. Each of these includes a...
Cast of Characters
Time Line of Events
The Ripple Effect
Hints on Play