(from the back of the book)
"Dragon dusk - on the edge of immortality" is the fourth and final part of the Dragon Chronicles, the campaign around the legacies Pyrdacors and the fate of the dragon in Aventurien today. Friends of the computer game Drakensang will again find familiar elements or persons.
The search for the meaning of the Dragon Chronicle has led the heroes in the past adventures to the edge of the known world. This book takes you far beyond that. After the secret dragon history was revealed, now it is time to use it. This time the heroes are one step ahead of their opponents, and if they manage to maintain this advantage and expand upon it, they can use their knowledge and finally go into the offense.
Now, secrets from ancient times need no more to be found and deciphered, but the future of a foreign globule and its inhabitants must be determined.
Before the heroes return to Aventurien, they have to experience the fate of Zze Thas as well as its people and find that both have been manipulated by the same opponents, that are facing the heroes. They meet the creator of ZZe Tha, a mighty dragons whose path they crossed already in the course of the campaign, and must use all their connections and shrewdness.
The final adventure of the campaign is modular and includes a number of scenarios and adventures that can be played in different combinations and order.