Reformation

 is a main quest in the Fallout 4 add-on Far Harbor.

Synopsis
In order to pacify the Children of Atom, DiMA proposes that the Survivor aid him in replacing High Confessor Tektus with someone less hostile to Far Harbor: A synthetic copy of the man.

Walkthrough

 * 1) The first step for the player  is to retrieve Martin's holotapes from the pump control underground room. It can be accessed through the sewer beneath the crashed Vim truck.
 * 2) Then they have to return to DiMA with the tapes to help him synthesize the Tektus persona.
 * 3) Afterwards, the High Confessor needs to make room for his replacement. The player has to go to the Nucleus and convince the real Tektus to meet them away from his flock, in the control center. Letting him hear Martin's New Age convinces him to the secret meeting, as he becomes concerned about Martin's potential return.
 * 4) Tektus is found down the side corridor in the control center, in the storage room. The player has two options: Killing Tektus and hiding him in the alcove, immuring his dead body so that nobody can find it, or persuading Tektus to flee, sparing his life.
 * 5) After the reformation is assured, the player simply has to return to DiMA.