To start the quest, talk to Chief Argo in a new outpost to the south of Port Phasmatys. It's exact location and layout are displayed in the map to the right. To enter the outpost, first talk to the guards at the gate: You will have to pay a toll of 100gp (50 with an activated Ring of Charos). They will then open the gate, allowing you to enter by walking over the bridge and into the settlement. Enter the main hut and ask the chieftain if he needs any help: Accept the proposal and then go and ask someone who's likely to know more - Reldo