Reclamation

Reclamation is an Institute radiant quest in Fallout 4.

Detailed walkthrough
Talk to Alana Secord in the Synth Retention part of The Institute. She'll tell you that a raider team just hit one of their scavenger teams and captured a synth in the process. Not having the assets to spare for a rescue, she has you do so for her, giving you the location and a transmitter to give to the synth, which will allow for a courser to pick it up. When at the location, you'll need to fight through the raiders and make your way to the synth, giving it the transmitter once you do. Travel back to the Institute and tell Alana you've succeeded, allowing her to schedule the retrieval. She can be asked for payment with a speech check, which will be 5 plasma grenades if successful.