Over on the Destiny Subreddit a number of theories have been getting thrown around, but that was all before the reveal of the Destiny 2 Forsaken story trailer and gameplay details. Now there are quite a few less, but one particular theory caught my eye and seems as though it could be real. Have a read yourself and see what you think.
Source: N4G PC Incredible Fan Theory For The Plot Of Destiny 2 Forsaken