In 1940s Chicago, a young black man takes a job as a chauffeur to a white family, which takes a turn for the worse when he accidentally kills the teenage daughter of the couple and then tries to cover it up.

Abby is a pregnant woman with a curious new boarder in the apartment over her garage. Turns out he's heaven-sent and is speeding along the Apocalypse by bloodying rivers, egging on plagues and following scripture word for word.