Nada, a down-on-his-luck construction worker, discovers a pair of special sunglasses. Wearing them, he is able to see the world as it really is: people being bombarded by media and government with messages like “Stay Asleep”, “No Imagination”, “Submit to Authority”. Even scarier is that he is able to see that some usually normal-looking people are in fact ugly aliens in charge of the massive campaign to keep humans subdued.
In New York, people are slain and strangled to death brutally on the open street. All witnesses agree that the murderer was in a cop’s uniform. Soon the police searches and finds a suspect in its own ranks: Jack Forrest, turned in by his own wife. To prove his innocence, he has to investigate on his own.