Three boys struggle to save their companion on a cave wall climbing trip.

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 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.

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.