From the back of the book:
"November 3067 saw the culmination of work two centuries in the making, work begun by Primus Conrad Toyama of ComStar, successor to Jerome Blake and the man responsible for single-handedly turning ComStar into a pseudo-religious organization with a vision: to lead mankind to the light... by any means necessary.
When the Star League self-destructs, a shadowy power behind the fanatical Word of Blake pulls the strings taut in righteous anger, launching a war to bring humanity to its knees.
But amidst the chaos and confusion swirling across a thousand light years, all is not as it appears. Friend becomes foe and today's truth is the lie of tomorrow. Can the Inner Sphere survive the opening of ComStar's box of secrets?
Dawn of the Jihad shakes the Classic BattleTech universe to its foundation, documenting the opening year in a decades-long struggle for the very survival of humanity. The series of events presented in this book unfold in a rolling format, allowing readers to immerse themselves more directly into the action than ever before. Players of both Classic BattleTech and Classic BattleTech RPG will also find framework rules to run almost any type of campaign set in this chaotic time."