Machines have taken over, but left humans thinking that they are still the ones in charge. The androids need humans because of the human brain fluid; without it the android brains can't work. Until the mad scientist finds out how to make this brain fluid artificially that is.
The suicide of a pregnant woman begins to look like murder and a county prosecutor is called in to investigate.
Fifteen years after a murderer is convicted he is released and all the witnesses against him begin to be murdered.
