You find yourself deep within the Dulth-Aral caves, supposed to be conducting a scientific expedition to document the remarkable rock-throwing lizard that calls this place home.

But what was meant to be a mission of discovery has spiraled into something far more sinister.

Dr. Kincaid's sudden accident, hitting his head on a jagged rock, and the horrific sight of him being dragged away by the Cave Children:

Creatures with no eyes, whose inverted bodies and eerie, mouth-like features defy all logic—haunt you.

Alongside Dr. Perry and Janette Briggs, you’ve set up a camp, hoping for some rest, but sleep eludes you.

Then, the silence is shattered. Janette's voice, calm yet disturbingly certain, echoes in the dark:

"This is Janette Briggs, daughter of Samuel Briggs, human child of the land of the man-God Christ. I now understand my duty."

"I am going to return to the nest of the Children of Ban-Dulth to offer myself as a servant to the Earth God."

"I shall never escape these caves, so I will make myself a new home in Dulth-Elania, his Kingdom Beneath the Earth."