ESO Chronological Timeline Guide - Best Way to Play the Story

The Deadlands is the last part of the Gates of Oblivion storyline. Lyranth the Dremora summons those willing to defend Nirn against the gates. The followers of Mehrunes Dagon threaten to unleash a storm of destruction upon the mortal realm. You will meet Lyranth in the mysterious Daedric plane known as Fargrave, a place that seems to be of no interest to the Daedric princes and has developed into a trading place for all kinds of trades.

You will be able to go into the heart of Mehrunes Dagon's realm, into the Deadlands, trying to fight back the danger that the Daedric prince is trying to unleash upon Tamriel.