Nails is the story of an assassin (his name is Hitman) who has a terrible headache and the only solution to cure it is drastic, that is, sticking a series of nails into his skull! This is only the first step towards a form of self-destruction that in the final part of the film gives us some truly unhealthy and disturbing images, obviously accompanied by blood and offal. A true visual delirium studied in the smallest details starting from the use of color in the three phases that punctuate this debut on acid.

The true history of Japanese Unit 731, from its beginnings in the 1930s to its demise in 1945, and the subsequent trials in Khabarovsk, USSR, of many of the Japanese doctors from Unit 731. The facts are told, and previously unknown evidence is revealed by an eyewitness to these events, former doctor and military translator, Anatoly Protasov.