The Nuclear Option The Railroad

Quest Giver
The Railroad Quest
The Institute (Location)
Previous Quest
Rockets' Red Glare
Next Quest
Burning Cover
The Nuclear Option The Railroad is a Quest in Fallout 4.

The Nuclear Option The Railroad Information


  1. Talk to Desdemona
  2. Talk to Z1-14
  3. Kill everyone in the relay control room
  4. Talk to Desdemona
  5. Reach the reactor
  6. Use terminal to override Institute lockdown
  7. (Optional) Issue evacuation order
  8. Reach the reactor
  9. Plant fusion pulse charge inside reactor
  10. Talk to Desdemona
  11. Talk to Tinker Tom
  12. Talk to Shaun
  13. Step into the relay
  14. Activate detonator
  15. Talk to Desdemona




Rad Resist.png NOTE: This quest is only available if you have sworn allegiance to The Railroad and have completed the Railroad quest Rockets' Red Glare. Speak to Desdemona and accept her task to infiltrate The Institute.

Rad Resist.png Relay into The Institute (Location) and link up with Z1-14. Committing to the cause at this point will cause any of The Institute Quests you've had in progress to fail so before speaking with Z1-14, make sure you've wrapped up any essential or radiant quests for them you were hoping to finish with the exception of End of the Line which will make the Railroad hostile. Once ready, eliminate the room of hostiles and Desdemona and other members of the Railroad will port in and hand you a Fusion Pulse Charge which you will be using to bring an end to the conflict for good.

Rad Resist.png Head through the robotics area, defeating Synth enemies along the way. Drop through the hatch to enter the BioScience lab, and continue towards the reactor entrance, which at this point has had its blast door activated.

Rad Resist.png Press the button at the central elevator to enter Father's quarters. You will obtain the password to override from him, or you can hack the terminal. Do either, and activate the Master Security Lockdown Override. You may trigger an evac warning to spare lives; this is an optional choice.

Rad Resist.png Go back through Advanced Systems to enter the reactor chamber. If you haven't evacuated the facility, you will encounter synths and scientists. Access the reactor door and then activate the housing.

Rad Resist.png Tinker Tom will teleport you to the Institute Relay Control Room. Speak to Desdemona, and then Tom will mention a child nearby. Speak to him and you have 2 options:
  • Agree to save him and look after him, at which point Tom will look after him until you reunite at the Railroad base.
  • Say the child must stay.

Rad Resist.png Step into the relay and teleport to the Mass Fusion Building roof where you will press activate a detonator to complete your mission and rid the Commonwealth of the Institute. Speak with Desdemona to conclude your main quest journey.

Notes & Notable Loot

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    • Anonymous

      My game is totally *****ed up now becuase of this quest. I go inside got everyone cleared and did the quest normally. I go topside (relay out), and z1-14 pulls out a knife and starts attacking the two random railroad guys. Des doesn't care, so I pass it off as a glitch. I blow the place up and then talk to des, all good there. Now I think I am done up here but the game says fast traveling is disabled, so I talk to everyone (who is still alive z1-14 killed the two guys by this point) and nothing new happens, but I can repeat the entire dialouge thing with des. So I use the console to re-enable fast traveling. I go about my buisness, and go to the HQ, I get there and tom is asking me if I am ready to relay out of the institute. Little Shaun says lets get out of here (same thing he says when we are in the institute still) and I can repeat the same dialouge with Des. Everyone is bugged as *****. I can't get shaun and I can't do any rail road quests becuase no one will talk to me or they will loop the same *****. Can someone please help (sorry bout the paragraph)

      • Anonymous

        Trying to find info on this without any luck: I enter the relay control room, Z1 tells me to kill everyone in it which i do. Z1 then says he needs a few moments but then those moments turn into minutes, hours, days without him doing f*ck all. he just stands there. I'm without power armour, no targeting mods on any weapons and have a save file to start immediately. No idea what causes this bug but it's def a game killer for me. Hope some one has any advise.

        • Anonymous

          After starting this quest, >>>do not enter the institute in power armor<<<. it can turn NPCs hostile for no reason, skip over quest stages or bug the whole thing so you end up in the institute alone with no objectives and no way out.

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