Pinned

Pinned is an Institute main quest in Fallout 4.

Detailed walkthrough
The quest will start by talking to Allie Filmore in the Institute and completing Mass Fusion. She will mention that Father is anxious to get the Sole Survivor involved with something else. Upon meeting him, Father will be talking to Dean Volkert as part of a health exam. He will cut the conversation with Dean short and explain to the Sole Survivor that he needs their help in assisting an Institute team sent out to invite T.S. Wallace, a wastelander who could help with the reactor. Wallace has called in the Gunners to defend him or the Minutemen (if Taking Independence has been completed) to help, which has complicated the mission. Father will tell the Sole Survivor to resolve the situation and bring back Wallace alive. Wallace's house can be found west of Graygarden, and upon arriving there, a team of Gunners or Minutemen can be found in front of it. The Gunners can simply be killed and player can proceed to enter the house afterwards. If the Minutemen are there, the player has three choices:
 * Kill the Minutemen.
 * Side with the Minutemen.
 * Convince the Minutemen to stand down with an easy persuasion check or three medium checks.

Once inside the house, the player will be greeted by Enrico Thompson who explains that he needs help convincing Wallace, who is locked inside his room, to come with them. Wallace can either calmed down with an medium persuasion check or threatened with a hard check, and can then be convinced to go after. If both checks were failed, Enrico will mention they are out of time and he will relay a synth inside Wallace's room to subdue him. Once he is dealt with, Enrico will comment on the outcome and the quest will finish.