Is Tammy the victim of a conspiracy, or is she just becoming a deranged mass murderer? Casual doomsday prepper Tamara Umbra has just bought a membership into a luxury fallout shelter called The End Timers. During a weekend visit to the shelter, an incident occurs, trapping her and her fellow members inside. Not able to take her medication, she begins to hear a voice in her head. At first, she attempts to fit in with the others and ignores the voice. But the voice continues. It tells her that there is a new world order conspiracy at work with her at the center and that everyone at the shelter is a part of it. Part of a secret society with an end-times agenda. As the voice presents its evidence, Tammy struggles to decide what is real and what is imagined.