The Good Fight

The Good Fight is a quest in the Fallout 4 Creation Club content "Capital Wasteland Mercenaries."

Detailed walkthrough
Go to the Lynn Pier Parking structure when prompted and kill all the Gunners there. Read the note picked up from the body of the nearby Vertibird pilot, Sparrow, and fly to GNR plaza. Upon arrival, the player character and the Good Fighters will be attacked by two waves of Talon Company mercenaries. After defeating them, go inside the GNR building and eliminate the rest of the Talon Company mercenaries. The corpses of the Good Fighters' senior members can be found throughout the building, as well as unique mercenary outfits and collectable loot. Upstairs, the leader of the Talon company mercs (Hatton) must be killed. Shut down the transmission beacon to complete the quest. After finishing exploring the plaza, one can recruit surviving Good Fighters to their settlements before using the Vertibird to return to the Commonwealth.

Bugs
Talon company reinforcements will not spawn after the first wave halting progress, and persists after reloading a previous save.