The Cult of the Dragon leads the charge in an unholy campaign to bring Tiamat back to the Forgotten Realms. With the race against evil moving from Waterdeep to the Sea of Moving Ice to Thay, the situation grows more perilous with each passing moment. The heroes must succeed, or Faerûn will succumb to draconic tyranny. In the end, the world will never be the same. A D&D adventure for chars of lvl 8-15, following the events of Hoard of the Dragon.