Setting
The Moonshaes are a group of island kingdoms a few hundred miles off the coast of Faerûn in the Forgotten Realms. Celtic Britain serves as the primary inspiration. The Ffolk live in the southern islands, where they farm, fish, hunt and trade. They revere the Goddess, aka the Earthmother (N), whose priests are druids, not clerics.
Northlanders from the mainland, based on the Vikings, came later, settling the northern islands and raiding the Ffolk settlements. They revere several deities: Auril, the Frostmaiden (NE), Tempus, the Lord of Battles (CN), and Umberlee, the Bitch Queen (CE).
Both groups can be found on the central islands of Gwynneth and Alaron, where things get interesting.
Adventure
Treasure Hunt was published before the release of the Forgotten Realms setting. While it was written with a Mediterranean-type climate in mind, its placement in the Moonshaes moves it to a colder climate, similar to that of the Orkney and Shetland Islands in the northern UK. So, if the DM hands you a player's map written on a palm leaf, just roll with it. Deal?
It's a short adventure, taking place over the course of two days in the cold, northern isles of the Korinn Archipelago.