One night, Cloe is awakened by an earthquake tremor that shakes her room. Terrified, she confesses her fears to her Dad. To comfort her, he tells Cloe a story about the Tzaddikum, people with "angels inside them" who are so good that God keeps the world going just for them. As long as there is just one Tzaddik in the world it will never be destroyed. Cloe takes the story to heart, believing her father is the last Tzaddik. After a car accident, Cloe's father goes into a coma and she begins to suspect that he won't wake up because his Tzaddik has been stolen by the old man in the next room. To restore her father's angel, Cloe believes she must kill the old man. Torn between what she believes is right and what she feels is wrong, Cloe must decide what to do, as two lives and maybe the fate of the world hang in the balance.