Your friend asked you to check in on his house while he and his family were away for the weekend, but as the Cold War between the Soviet Union and the United States intensified the ever-present threat of nuclear annihilation was greater than ever. With your busy schedule you forgot the code to the bomb shelter. What would happen if a bomb was really launched? Could you remember the code and make it into the shelter before the bomb went off? And how would you get out of the shelter? You and your team must work through the clues to survive a nuclear attack.