Two men who do business together, Mark and Sean, think that they have gotten away with a $5 million deal in bad money. Shortly after they start celebrating their success with some friends, Sylvia and Christina, they find themselves fighting for their lives after they let a mysterious stranger with a British accent named, John, into their home. At first John seems like nothing more than a curious neighbor, but he soon shows that he knows a lot about Mark and Sean and their ill-gotten gains. John challenges them to get him the money or they will face serious consequences.