A woman and her sister begin to link a mysterious tunnel to a series of disappearances, including that of her own husband.

Callie: I'm gonna shower. I smell like an armpit's asshole.
Tricia: Don't underestimate the attraction of oblivion... not 'til you've lived a little longer.
Callie: Tricia, every culture in the history of our species has had mythology about creatures that spirit people away, that take them into some unreal underworld, enslave them, brutalize them...
Tricia: ...easier to embrace a nightmare than accept how stupid, how simple reality is some times...
Callie: The Scandinavian Vinder-folk Troll legends, the Egyptian insect demons, the Banshee, the Wendigo, there's a common thread to all of this...! They're just... finding... 'kay. Dark Matter. Tangential dimensions. If everything is made of atoms, and atoms are mostly empty space, how is anything really solid? Things go missing in this neighborhood, and have for as long as history has recorded it, and those things turn up in one place.