From publisher blurb:
Where Chaos Rules, Adventure Follows
A hotbed of adventure awaits in the rolling maelstrom of the Elemental Chaos - a tumultuous plane of primordials, titans, elementals, slaads, and demons. From the City of Brass to the githzerai monastery of Zerthadlun to the spiraling depths of the Abyss, adventure lurks behind every lava waterfall, across every icy battlefield, and beyond every raging lightning storm
The Dungeons & Dragons supplement explores the Elemental Chaos in detail, featuring key locations throughout the plane. It also presents new monsters, adventure hooks, encounters, hazards, and everything Dungeon Masters need to make the Elemental Chaos a featured setting in their campaign.