For decades the survivors of the Third World War found safe haven underground. But it was only a matter of time before someone would snap. Today, the once safe hideout has become a nightmarish prison. The shadows hide secrets darker and more terrifying than the madness spreading throughout the shelter. As all hell breaks loose, you will face the dangers lurking in the darkness of the shelter and in your own mind – battling the enemy as well as your own weaknesses and fears. Can you overcome these menacing terrors, and lead the residents to a new safe harbor?