From Introduction: As the characters sail through the frozen northern reaches of the world they must navigate the Chatwa Archipelago. Hidden within is the secret island of the Ice Mithral dwarves. Either through design or providence the party will eventually be forced to explore this island. Encountering both pirates and the former dwarves, now undead guardians of the secrets of Ice Mithral. The characters may be of any race or class, though dwarven characters might derive particular enjoyment from this adventure.