In the late 1970s, a young American Nazi hunter named Barry Kohler stumbles upon a secret gathering of aging Nazi criminals in Paraguay. He contacts his mentor, the renowned Nazi hunter Ezra Lieberman, to alert him about their activities. Despite initial skepticism, Lieberman begins investigating and uncovers a chilling plot orchestrated by the infamous Dr. Josef Mengele. Mengele is executing a plan involving the assassination of 94 men across various countries to achieve an insidious scientific agenda.

As Lieberman digs deeper, he discovers that these targeted men share specific characteristics linked to a controversial genetic experiment. The deeper Lieberman delves, the more horrifying the implications become, revealing a conspiracy with far-reaching consequences. Racing against time, Lieberman must piece together Mengele's scheme and thwart the resurgence of a terrifying ideology. His pursuit leads him across Europe, encountering danger and moral dilemmas at every turn, as he confronts the sinister legacy of the Holocaust and its modern-day ramifications.