In the near future, life on Earth has been decimated. Paul and his twin teenage sons, Thomas and Joseph, have been living a half-life – tranquility by day and torment by night. When the sun sets, ferocious creatures of the night awaken and consume all living souls in their path. One day, when Thomas doesn't return home before sundown, Paul chooses to leave the safety of their fortified farm to find him before the creatures arrive. Just as he finds his boy, a nightmarish battle ensues and Paul is gravely wounded. Now the twins must devise a desperate plan for surviving the coming night and use everything their father has taught them to keep him alive.