From the back of the book:
"The brave warriors of Task Force Serpent secretly made the thousand-light-year journey to the Smoke Jaguar home world of Huntress to eliminate the last of the Clan's holdings. What they find there will test the limits of their skills, their endurance and their loyalty.
Twilight of the Clans is a BattleTech scenario pack that picks up where The Dragon Roars left off, as the campaign to end the Clan invasion reaches its stunning climax! Players can take the part of the Star League or the defending Clans in a series of ten BattleTech scenarios, and even accept the challenge of commanding the entire assault on Huntress in a detailed BattleForce 2 campaign."