Loosely based on the 1966 science fiction novel Make Room! Make Room! by Harry Harrison, it combines both police procedural and science fiction genres; the investigation into the murder of a wealthy businessman and a dystopian future of dying oceans and year-round humidity due to the greenhouse effect, resulting in suffering from pollution, poverty, overpopulation, euthanasia and depleted resources.

References:
https://en.wikipedia.org/wiki/Soylent_Green