Kidnapping

Kidnapping at (Location Name) is a Minutemen radiant quest in Fallout 4.

Detailed walkthrough
This quest can be started randomly when speaking to Preston Garvey or listening to Radio Freedom. If a settlement hasn't been unlocked yet, this quest may be started by speaking to a settler at that location and it will unlock the settlement.

The leader of the concerned settlement will ask the Sole Survivor to rescue one of the settlers. The Sole Survivor then has the option to eliminate the kidnappers or to give money to the settlement leader so they can pay the ransom. The ransom varies between 200 and 500 caps. The kidnappers can be super mutants, raiders or Gunners.

Failure to free the kidnapped settler in a timely manner will result in the failure of the quest.