Exodus Black, Arcadian Valley, Nessus

Zavala: Guardian, there's a cloaked Fallen in your vicinity. Neutralise it, we need to confirm a theory.

Guardian finds and neutralises cloaked Fallen. It drops a 'Scout Report'

Ghost: We found something on the body. These are coordinates to the Exodus Black!

Zavala: Indeed. We have reports that the Fallen plan to destroy Failsafe's mainframe and scrap her for parts.

Ghost: Not on our watch. We're on our way, Failsafe.

Failsafe: Thank you very much. Continued existence is one of my prime directives. It was the Cayde-unit who lead the Fallen to me! He totally blew my cover. All of this is his fault.

Guardian runs to the Exodus Black

Ghost: Zavala, I'm picking up a Fallen signal from a nearby cave. I think that's where they are getting their orders. How about we take out their leadership?

Zavala: That's how you ended the House of Wolves. That's how you folded the Red Legion. Do what you have to.

Chamber of Sky

Ghost: I… wow

Zavala: 'Wow' is not a helpful term on the battlefield Ghost.

Ghost: So the Fallen signal is coming from behind a massive barrier powered by Vex tech. Looks like they've stolen themselves a toy.

Guardian overrides the barriers using charges.

Ghost: Now let's see who's been sending these Fallen to kill Failsafe. And kill them back.

Elyksul, Assault Leader fights the Guardian and is killed

Ghost: Alright, I think we've got this taken care of. That Fallen crew won't be bothering you anymore, Failsafe.

Zavala: Good work, all of you.

Failsafe: You have my thanks friendly Ghost, Captain. You are clearly optimised to solve problems created by the Cayde-unit. That must be one of your designated day-to-day functions!

Along the North wall, Ghost finds something interesting

Ghost: This isn't like other Vex I've seen. I think its a relic from past iterations. Or maybe… future iterations. You can never tell with the Vex.