You receive this quest from the Village Elder after completing the Temple of Trials. The Elder informs you that you must seek out a man named Vic in Klamath and inquire about the Vault 13 water flask he had traded here recently.
When your character arrives at Klamath, you'll soon find that Vic is no longer there. It appears that he has run into some trouble down at The Den. Head your way there as soon as you can. Grab the radio from Vic's shack before you leave! It will save you some backtracking later on. This can be found in the top corner adjacent to where you enter. The shack has a sign with Vic's on it. You will need to go to the back of the shack and lockpick the door. Alternatively, if you have some spare plastic explosives or dynamite, blow the door off its hinges. The radio can be found on a half-height bookshelf along with various other items.
Upon arriving at The Den, you'll need to travel over to the east side and visit Metzger. The slaver boss tells you that Vic sold him a broken radio and won't let him leave until it's fixed. Ask Metzger for permission to speak to Vic (if you can't, talk to Vic through the window).
(after finishing Free Vic from his debt)
- A glitch in the game makes it possible to buy Vic out for free. If you have the needed money, click barter, just before you hit the answer that makes you pay the $1000 (or $500), drop all your money, go back and "buy" Vic for free.