Thorn (Charlton Heston) lives with Sol (Edward G. Robinson) in 2022 and they form a team of detective and researcher respectively. Sol being older has regrets of the evolution of the world and how just food isn’t the same anymore. Instead of eating crackers of Soylent Green they were eating real food. The detective story is about the assassination of a rich man called Williamson (Joseph Cotten). Thorn’s supervisor asked him to close the investigation but being stubborn leads Thorn to disover the truth about the society and the explanation of the murder.
