From the back of the book: Tiamat has been successfully summoned to the Forgotten Realms. Demon Lords prowl the Underdark. The Ordning is shattered. Baldur’s Gate has been swallowed up by Avernus. And amidst the chaos presides the Maimed Lord Vecna. Rise Of Vecna imagines a world where all the various catastrophes threatened in a Wizards of the Coast hardcover adventure have come to pass. The Realms are in ruin and it falls to your players to pick up the pieces. While doing so they will travel across the Sword Coast — from the Greater Mines of Mirabar to the undersea fortress known as the Maelstrom. Along the way they will advance from 3rd to 10th level, possibly putting an end to Vecna’s dire machinations.