Bungie has posted two lengthy, multifaceted story articles that follow many of the major characters in Destiny 2. Players will undoubtedly recognize Osiris, Sagira, and Commander Zavala. The story depicts the actions of Osiris and a major sacrifice that was made.
The story is undoubtedly lengthy, but for Destiny 2 players that are looking for lore beyond measure, the Immolant story will scratch that itch. You can find the first part and the second part in the following tweets. Immolant Part 1:
Immolant Part 2: