A nightmarish vision of the future set in New York City circa 2022. The population has swelled to 40 million and the environment is so ravaged by pollution that a synthetic food known as Soylent Green is the only kind available.

When the director of the giant corporation that manufactures this food supply is murdered, the detective investigating the case gradually discovers the horrifying truth about Soylent Green's secret ingredient.

This is Edward G. Robinson's last movie. Based on Harry Harrison's "Make Room! Make Room!"