Children came down with an illness, At first, they couldn't stand daylight, then the next day could only drink fluids on the third morning they had disappeared. The Islanders knew about the guild and decided to send a dolphin with a message requesting help.
The party came to the Island guided by the dolphin. Once on land they were told the details. There was a young girl who was in bed in a darken room as the first part of the illness was present. The party decided to keep watch as they had determined that no Curse or disease was present. During the night a figure was spotted at the edge of the village, while some of the party gave chase some others stayed with the girl, on of them was hit with a small blow dart and was unconscious. The other had noticed the curtain move but didn't investigate but they did raise the alarm. Some darts were recovered and found to have a very strong poison; this put the victim to sleep and wiped their memory for the past 12 hours.
On investigation and speaking to village members they learned that fires had been seen near the hills, also some mention of the Moon cult might be back. Too learn more they were told to see the Widow. From the widow they learnt that goblins had been displace from their cave home at the base of the mountain, also animals had reported that strangers had crossed the hills towards the mountain.
This led to a camp where the children were being held as slaves to work in the cave. The lead cultist/kidnapper escaped. On killing the others, it was noted that the body became covered with ice. The children were saved and returned to the families.