The lives of three lonely strangers intersect while commuting on New York's 1 and 9 subway lines.

Six strangers find themselves trapped in a New York City subway by Mac, a mysterious man who claims to be a demon hunter. Insisting one of them is evil, he peeks into their souls discovering five eerie, supernatural tales: a desperate woman seeks help from a fortune teller, newlyweds discover a creature lurking outside their apartment, a young man visits an insane asylum, conjoined twins discover a wish-granting coin, and a man lusting over a co-worker discovers a magic potion shop. It's then up to Mac to solve the mystery and destroy the demon amongst them.

Dev and Maya are both married to different people. Settled into a life of domestic ritual, and convinced that they are happy in their respective relationships, they still yearn for something deeper and more meaningful, which is precisely what they find in each other.