Codsworth suggests that the player character to go to Concord for help, where the Sole Survivor rescues Preston Garvey--one of the last of the Commonwealth Minutemen--and his band of settlers from a group of raiders.
Codsworth suggests that the player character to go to Concord for help, on the way, finding and befriending a German Sheapard named Dogmeat. When the Sole Survivor arrives at Concord, they rescue Preston Garvey--one of the last of the Commonwealth Minutemen--and his band of settlers from a group of raiders.