Guardians must defend The City from an invasion by Ghaul and the Red Legion

After the defeat of the Red Legion, the battered Last City starts to rebuild all they lost. However, when a terrible Vex plot threatens Mercury, the legendary warlock Osiris calls upon the Guardian to prevent the Vex from assimilating the entire universe.

Ana Bray, a Guardian long thought lost, searches for a connection to her past…one that could be hidden forever beneath the polar ice cap of Mars.

The Reef has fallen to lawlessness, and now the most-wanted criminals in the galaxy - the Barons & Uldren Sov - have organized a jailbreak at the Prison of Elders. You and Cayde-6 have been sent in to bring law and order back to the embattled facility, but things do not go to plan. Facing insurmountable odds, Cayde-6 ends up paying the ultimate price.

As the heroes of the last safe city turned their attention to frontiers beyond the protection of the Vanguard, new Nightmares have emerged from the shadows of our long-forgotten Moon. Called forth by the haunting visions from her tormented past, Eris Morn has returned and unleashed something that once slumbered beneath the lunar surface – a long dormant power even she cannot control.