In a sleepy, secluded Alaska town called Barrow, the sun sets and doesn't rise for over thirty consecutive days and nights. From the darkness, across the 80 miles of roadless, frozen wasteland, an evil will come that will bring the residents of Barrow to their knees. Barrow's Sheriff Eben Olfson (Josh Harnett), his estranged wife, Stelle (Melissa George), and an ever-shrinking group of survivors must do anything they can to last until daylight.