The next major piece of Destiny 2 content is called Shadowkeep, and it’s heading to PS4, Xbox One, and PC on October 1. It will bring players back to the moon, a setting last accessible in the original Destiny. A new threat has arisen on Earth’s satellite, and it’s up to you intrepid Guardians to stop it.
Unlike some previous Destiny releases, this one is relatively easy to understand. You don’t need to own any previous version of Destiny 2 in order to play Shadowkeep. Buying Destiny 2: Shadowkeep gets you access to the year-one releases Destiny 2, Curse of Osiris, and Warmind. Notably absent is Forsaken, last year’s big content release, as is all year-two seasonal content. If you want to play that, you’ll have to pay up.
Source: IGN.com Destiny 2: Shadowkeep – Here's What Comes in Each Edition