Book 3 of 3: And so continues the saga of the Clan invasion and the explosive struggle within the Inner Sphere. With secrete aid from ComStar-the Terran-based sect that serves as the keeper of the Inner Sphere's technological secrets-the Clans' BattleMech warriors have been incredibly successful in their campaign of invasion. But ComStar has its own reasons for giving aid to the enemy, and if its strategy proves successful, the Inner Sphere worlds will finally be reunited under ComStar's rule.