Jack and Sarah are sent to a rough part of downtown Detroit where there has been a series of gruesome deaths, but not all it what it seems. When a local gang stumble across an abandoned subway they mistakenly decide to hold a fight with a rival gang down there, but unknowingly to them, they are not the only ones lurking in the shadows.
With the local police department unable to gain any leads it's up to the mythical hunting duo to find the subway and save the gang from an untimely death, but even for Jack and Sarah, what they meet down there is not what they expected, and the hunters soon become the hunted.
Will the duo make it out alive or will they suffer the same fate as the victims in Detroit?