At night and on weekends, four men in a suburban garage have built a cottage industry of error-checking devices. But, they know that there is something more. There is some idea, some mechanism, some accidental side effect that is standing between them and a pure leap of innovation. And so, through trial and error they are building the device that is missing most. However, two of these men find the device and immediately realize that it is too valuable to market. The limit of their trust in each...

Spike Lee's take on the "Son of Sam" murders in New York City during the summer of 1977 centering on the residents of an Italian-American South Bronx neighborhood who live in fear and distrust of one another.