A archaeologist specializing in Aztec civilization struggles with life and happiness after the untimely death of his wife, herself a descendent of the Aztec people. He takes his daughter to Mexico to immerse himself in work where his daughter starts having dreams of being sacrificed on an altar in an Aztec ceremony. The father apologizes saying his work is interfering with their happiness and they go off on a vacation. Arriving at their destination, they dig holes in the back yard (why, I can’t remember, maybe it’s just an archaeologist thing,) and find a slab of stone that swallows them up.