They were told it was a simple weekend retreat. The brightest young minds of the country coming together to tour the government's newest facility, a fallout shelter hidden in a remote New Mexico cavern, known only as The Bunker. They were told they would be able to leave. But it was all a ruse. A catastrophic event has rendered the world above uninhabitable. The only survivors are those locked inside The Bunker's walls. Or are they? Those in charge have a secret. One they pray will never be exposed. Because what lurks beyond The Bunker's door is more horrifying than anyone could ever imagine.