From publisher blurb:
Darkness spreads across Faerûn. Under this pall of shadow, the drow fight with impunity, protected from the harsh daylight. With every passing month, they conquer more territory and further Lolth’s ultimate goal of becoming the Goddess of Magic.
"War of Everlasting Darkness" is a Dungeons & Dragons Roleplaying Game adventure designed for the autumn 2012 season of the D&D Encounters official play program. The adventure is set in the Forgotten Realms and spans two years of game time. This book comes with three full-color battle maps, eight ready-to-play adventures, and information on the D&D Encounters program.