Based on a true story, David Wilkerson (Pat Boone) is the small-town preacher who gets caught in the shadows of a crime-ridden neighborhood in New York City. He encounters a gang led by Nicky Cruz (Erik Estrada), and David brings a message of hope to the angry youths. Guided by the street-wise Little Bo (Jo-Ann Robinson), David quickly learns about the neighborhood and how to approach the cynical juveniles. This moralistic family film attempts to give hope to those who walk in the shadows of darkness. Despite the preachy nature of the plot, it is a well-done film and Pat Boone's character relates well to the targeted white, middle-class audience. Nicky Cruz would go on to become an ordained minister, preaching the gospel due to the initial efforts of David Wilkerson.