From the Hanford site in Washington state, home to scientists working on the Manhattan Project in 1943, via La Hague in France, a plutonium reprocessing plant, to Rokkasho in northern Japan, a nuclear plant built atop a seismic fault, this film tracks the origin and use of plutonium. It questions the transference from military use to civilian use. It brings into focus the scientific, industrial and geopolitical stakes.