From the first page of the PDF:
Catastrophic events have transpired during your absence, and Faerûn lies in ruins. In a world covered in darkness that even the gods have forsaken, can you provide a shred of hope to the few survivors, or will you too succumb to despair? A three-round Living Forgotten Realms Epic Campaign adventure for 25th level characters. This adventure is a direct sequel to EPIC4-1 Shooting the Moon.
This is a three-round adventure. We recommend that you allow a minimum of 12-15 hours of playing time.