The Fall of Ledria

It appears in the alternative timeline Black Sun.

History
In the Divine era, the Void creatures suddenly emerge from nowhere and descend upon the world. The town of Ledria also comes under attack and is run rampant by Void. With the Immortal Emperor's rumored death, there is seemingly no salvation for humankind.

The local citizens started evacuation, but some of them got stranded and surrounded by the Void. The Traveler frees most of them, however a towering Void monstrosity is to be fought: the Hollow Maw.