"The note that Petra translated for you is addressed to a 'daughter of Light,' and it indicates that there is a stolen Rocket Launcher hidden somewhere in the labyrinthine Prison of Elders. To identify its location,k the note indicates that you'll need a map that has been squirreled away somewhere in the Ascendant Plane."
Complete one of Petra's weekly Ascendant challenge bounties in the Dreaming City.
- Having collected the Ascendant Challenge bounty from Petra Venj (for the powerful gear).
- Travel to the location of the Ascendant Challenge for the week and complete it.
- Complete the challenge and open the chest to get the next quest step.