An intrepid caver, determined to save the woman she loves, descends into caverns where beautiful music supposedly drives humans to insanity and violence.

An archaeologist finds an ancient funeral cave and intact skulls containing jars of bone marrow. When she studies one of the jars back at the lab, she accidentally exposes herself to its contents and experiences a strange transformation.

A young woman who is a Speleologist teams up to explore an extremely deep cavern with a Geophysicist who believes that the earth is hollow and the Underworld is accessible through caves. Once sealed by Aboriginals, the pair soon regrets reopening the cave.

At a space frontier, infected humans are turning into alien moth creatures and the government considers mass executing them all. A scientist who has seen signs of the moths' intelligence must fight for their lives.

When a foreign organism crash lands in Antarctica, it must disintegrate and occupy the bodies of Norwegian men in order to stay alive.

In an environment where the earth is devouring itself and human beings and producing valuable drugs, a successful drug-harvesting team tries to escape a deal with a powerful businessman but face terrifying consequences for defying his orders.

A group of explorers take a traveler to tour a cave where ghosts sing songs forgotten by the living. Upon entering, they realize they underestimated the effect the songs have on the psyche.

When a group of boys happen upon a prehistoric cave in France while out hunting for rabbits, they must decide who is trustworthy enough to share their secret with.

In a post-apocalyptic near future, a scientist and a young boy find strange creatures among Earth's growing piles of garbage. Eventually, most of the earth's garbage morphs into these monsters and humans must learn to co-exist with them.

An initially unwanted infestation fosters understanding between a woman and the cockroaches in her house.