Set against the backdrop of post-World War II Germany, a young freelance journalist named Peter Miller stumbles upon the diary of a Holocaust survivor who recently committed suicide. The diary details horrific experiences in a Nazi concentration camp and names former SS officers involved in war crimes. Driven by a quest for justice and intrigued by the peculiar circumstances of the man's suicide, Miller embarks on an investigation to track down these war criminals hiding under assumed identities. His search leads him to uncover traces of a secret Nazi organization known as ODESSA, which stands for the Organization of Former SS Members.

As Miller delves deeper, he faces increasing dangers and obstacles from various forces seeking to keep the truth hidden. The journalist's personal commitment is tested as he navigates through layers of deception, betrayal, and violence. Finding leads that connect high-ranking officials in modern society to these hidden war criminals, his pursuit grows increasingly perilous. Obstacles and confrontations intensify as he pieces together a shocking conspiracy, pushing him closer to the heart of a dark, sinister truth from which there may be no return.