Guildhall is an archipelago nation, far from the war and politics of the continent, but deeply embroiled in its own struggles... ages ago it was run by the Council of Archmages, but they all died when the world's magic started to slip away, and the islands are trying to hold onto civilization with dying spells and failing artifacts.
Worse, the great Sea Walls have finally fallen, leaving Guildhall open to the beasts from the ocean, where monsters beyond imagination dwell.
You are a member of the Flintlock Society: your soul has been bound to a ship, giving you incredible resilience and magical skill, in exchange for battling the many, many sea monsters which threaten your nation.
Flintlock is a story game that's primarily about describing big, pirate-themed action set-pieces, in which you dramatically lash out at a watery monster which will, in turn, lash back at you. Think of it less as a game and more as a "cool scene engine."
Source: The Game Website.