Marcus Holt wakes alone in the crumbling corridors of Zirotech's classified deep-sea experimentation facility. A catastrophic event has wiped out the crew. Life support is failing. The darkness hides mutated horrors — the remnants of failed experiments. Navigate multi-level sections from specimen-lined laboratories to flooded corridors and cramped ventilation shafts, while the environment slowly erodes your mind. The story unfolds through logs, recordings, and terminals as you fight to stay alive and understand what went wrong.