In the not-too-distant future, the warmth on Earth is gone, and coldness rules every corner of the world. The surviving humans have taken refuge in various bunkers. At first they were happy and peaceful, but with the shortage of food and the mass death caused by the deadly flu, the situation has changed fundamentally. The survivors carefully extracted the seeds of the plants for emergency use, while at the same time guarding against harm from their own kind. At Station 7, the person in charge, Briggs (Laurence Fishburne), and the little man Sam (Kevin Zegers), each struggled to cope with the difficult days. One day, Station 7 accidentally received a distress message from Station 5. In order to find out and find equipment that can be recycled, Briggs decided to lead the team, and Sam also went with the team. The blizzard that covered the sky and the sun, on the defeated land where the sun had not been seen for a long time, unpredictable dangers were waiting for them...