Open Season

 is a quest in Nuka-World.

Synopsis
In order to free the people of Nuka-World, the Sole Survivor is asked to wipe out the raider leadership. With them gone, the entire area will descend into chaos as the raiders destroy one another.

Walkthrough

 * 1) Talk to Mackenzie Bridgeman or Preston Garvey.
 * 2) Hunt down the heads of the hydra: Mags Black, William Black, Mason, and Nisha.
 * 3) Be warned that once one raider underboss dies, every single raider in Nuka-Town USA will become hostile dozens upon dozens of them will gang up on you, so be prepared to handle them all. This is not a quest to take on under-supplied.
 * 4) Once they're gone, return to Mackenzie to tell her that everyone is free to go.