
The Orokin were protecting Lua at the time. The quest starts with a cinematic which shows a Sentient invasion occurring during The Old War, as Railjacks are seen attacking a massive Hunhow-class Sentient. In the Personal Quarters, the player is prompted to touch the Lotus's headgear, which has a purple aura around it. Upon activation, the player will be tasked to inspect their Personal Quarters. This quest can be accessed directly from the Codex as a chapter of the Prelude to War quests, after completing the Chimera Prologue.

A vision of the Sentient Mothership exposes a meeting between Erra and Natah, hinting at an escalation of the war with Natah's war cry.

Afterwards, they destroy a mysterious red crystal at the end of the Murex, which upon re-boarding the Orbiter reveals flashbacks about The Old War and Natah's brother, Erra. With their Paracesis in hand, they board the Murex to fend off the Sentient threat. In preparation of The New War, the Tenno travels to the Veil Proxima with their Railjack crew, only to discover a Murex Ship.
