While wealthy Manhattanite brothers Dylan, Logan and their friends make the trek across town for a Brooklyn culb, they run into Simon, a notorious gangster. Dylan, in an ill-advised bid for a criminal relationship with Simon, sets up a drug deal. The deal soon goes awry, and a livid Simon wants them dead. In a desperate attempt to get back to Manhattan, the group must flee deeper and deeper into the belly of New York City's labyrinthine-subway system in a terrifying life-or-death race against their pursuers.