The plot unfolds in dark caves called catacombs. It was said that the catacombs are full of unknown surface creatures that no one has ever seen. Some were friendly, others longed for destruction. Peaceful creatures constantly had to hide from the destroyers in order to avoid unjustified anger. But once everything changed. Waste, constantly dripping from the ceilings of the catacombs, formed a small creature - a clot of viscous mucus of a bluish tint. And now the fate of the catacombs depends only on this creature! Go through a huge number of caves, solve many puzzles, and fight against the strongest enemies!