Beneath the vast expanse of the Avalon's great oceans, lies a thriving underwater metropolis, notorious for its perilous nature, yet renowned for the fabled treasures that lay in its proximity. These riches are so immense that they captivate the wealthiest and most influential individuals worldwide. However, even these esteemed figures cower behind the daunting perils of the ocean, concealed within the Abyss—a treacherous realm that only a select few dare to venture into. These daring expeditions are infrequent and demand highly trained teams, consisting of hundreds or even thousands of individuals who brace themselves for the inevitability of facing death.

This story takes place in the Coldfire Chronology a large overarching story that will consist of many books and series that are all set in the same world. Coldfire Abyss sets itself in the deep oceans of Avalon the world the series is set in.