Nestled within the depths of the Mariana Trench lies a corporate underwater mining facility, reminiscent of an industrial Atlantis. Following a fatal incident in a dry-dock chamber that claims the lives of several miners, an investigator is dispatched to determine the cause. He quickly discovers that the incident was no mere accident. As tensions escalate, he finds himself entangled in a perilous struggle between the miners and the corporation, battling to survive while seeking to reveal the truth.