The story takes place on Kairos, a planet whose location was revealed to the wider galaxy when Pandora's moon Elpis was teleported across space in an event known as Moonfall. Six years later, a new generation of Vault Hunters arrives on Kairos, drawn by the promise of the fabled Vault and the secret alien treasures it is said to hold. Standing in their way is the Timekeeper, a ruthless dictator who rules the planet with an army of synthetic followers called the Order. Among the arriving Vault Hunters are Rafa the Exo-Soldier, Harlowe the Gravitar, Amon the Forgeknight, and Vex the Siren. Thrust into a world under tyranny, they join forces with the Crimson Resistance to rise up against the Timekeeper and uncover the mysteries buried beneath Kairos.