It is based on French writer Laurent Binet's novel HHhH, and focuses on Operation Anthropoid, the assassination of Nazi leader Reinhard Heydrich in Prague during World War II.
Film tersebut berdasarkan pada novel HHhH karya penulis Prancis Laurent Binet, dan berkisah tentang Operasi Anthropoid, pembunuhan pemimpin Nazi Reinhard Heydrich di Praha pada Perang Dunia II.