The Underdark's Schemes
89th Floor of the Tower, the Floor controlled by the Underdark City, several months after the siege of the Zephystrand City.
The 89th Floor of the Tower was one of the most unique floors in the entire Tower because the entire Floor looked like an enormous subterranean environment, with a vast network of underground caverns and tunnels beneath the surface of Abeir-Toril, evoking the impression of an immense underground domain.
It has been told that many Epochs ago, there existed a Principal World called Abeir-Toril that was dominated by a mighty civilization that roamed the Cosmos in search of new worlds and soon enough could not avoid coming into contact with the terrifying creatures that lived within the coldness of the Void.