Research ship VALIS XI stopped responding to callsigns after several days without contact. To clarify the situation, a scout was urgently sent and this is the hero of the game Descent. He found completely deserted compartments, where there was not a single astronaut. But some unidentified object appeared nearby. The astronaut went into space and went to investigate the object. It turned out to be a ship of unknown design, consisting of a labyrinth of compartments. Probably it was this ship that caused the disappearance of the crew. So you need to be careful, there may be dangerous creatures on a foreign ship. Help the hero identify them and not be a victim in Descent himself.