We have a new plan. The Vanguard will lead a host of Lightless Guardians on a counteroffensive against the occupied City, hoping to free the Traveler. Meanwhile, you must disable the Almighty's sun-killing superweapon before it can destroy the entire solar system. To approach the Almighty undetected, steal the personal ship of Thumos the Unbroken, one of Ghaul's chosen Blood Guard.
Bring the fight back to the Red Legion by completing mission "Payback" in the EDZ.