Roland, a veteran warlock and god killer embarks on a mission with the hunter vanguard Cayde-6 to investigate a mysterious signal aboard a station in Ceres' Orbit. The Cocytus. They find themselves in a new world full of people with strange powers and prospering unlike anything they have ever seen.

After investigating in Tokyo, one guardian ends up in the different world. he must learn to be fights in to make a new friends and allies to defends a humanity from the future invasion.

Almost every time period has a beginning see as how a lost guardian tries creates his own Era as he find himself a new purpose as he tries to lead a people to usher in their own Golden Age.