Adrift on wreckage, you fire a flare at a silent navy ship. Boarding, you find it lifeless—except for an AI named Abyssal. It declares you the new codename Deep Lord and leads you to an armory. There, it equips you with a sleek military suit: a watertight helmet linked to its system, an oxygen tank, flippers, and utility pockets. Armed with a weapon of choice, you and Abyssal prepare to uncover the ship’s haunting secrets and carry out perilous missions on unknown islands and nations.