The story takes place in an undefined time. In a dungeon, five people struggle for their survival: three women, Bionda, Nera and Rossa; a theologian and a young doctor. Outside this hideout, the apocalypse reigns.

The evil has been generated by a patient zero and a group of former soldiers, “The Exterminators”, who crucify any person they meet to find the source of evil. Are the five people really safe in that place or is there something they don’t actually know?