The protagonist of the story is Will Scott, one of the successful cryptanalysts at the FBI. He is tasked with a crucial secret operation - deciphering an important document found at a crime scene. The paper was obtained by the special services from very dangerous individuals. Little does Will know what he will encounter in the near future. After some time working on the document, he discovers that it is a list of names of presumed victims. Now, the lives of Will and his loved ones are in danger.