Archaelogist Ashley Carter and a team of specialists attempt to explore a labyrinth deep beneath the ice at the bottom of the Earth, a deadly maze that holds things that should not be disturbed.

A Victorian scientist invents a giant burrowing machine, which he and his crew use to dig deeply into the earth. To their suprise, they discover a lost world of subhuman creatures and pre-historic monsters.

"July Chen sees ghosts. But her dad insists ghosts aren't real. So she pretends they don't exist. Which is incredibly difficult now as it's Hungry Ghost month, when the Gates of the Underworld open and dangerous ghosts run amok in the living world. When July saves a boy ghost from being devoured by a Hungry Ghost, he becomes her first ever friend. Except William is not a ghost. He's a wandering soul wavering between life and death. As the new friends...

In this modern retelling of the Persephone myth, Haden Lord, the disgraced prince of the Underrealm, is sent to the mortal world to entice a girl into returning with him to the land of the dead.