https://www.polygon.com/2018/8/28/17792670/destiny-2-forsaken-new-raid-dreaming-city-video-watch

Destiny 2’s newest expansion, Forsaken, isn’t out yet, but Bungie is already preparing players for what the end-game content will look like. Most of Forsaken’s end-game will take place in a place called, the Dreaming City, as the developers have previously said.

A new trailer introduces the city as a once spectacular place overtaken by some kind of mysterious evil. Once players finish the main story line of Forsaken, they’ll be tasked with saving the Dreaming City from whatever is controlling it. That means exploring the city and discovering mysteries to uncover, puzzles to solve and enemies to fight, based on the trailer.