Police detective Pat O'Day (Leon Ames) involves himself with a gang of slum kids led by Dutch Kuhn (Hally Chester) and Danny Dolan (Harris Berger). He tries to keep them from getting into trouble and to help out Danny, whose brother, Knuckles Dolan (Dave "Tex" O'Brien), is about to be executed for a murder allegedly committed as part of his involvement in a counterfeiting ring. O'Day knows Knuckles, having tried to keep him on the right side of the law, and knows that he couldn't have done the shooting, regardless of the circumstantial evidence, because Knuckles resolutely refused to carry a gun -- the real killer is the gang leader, Mileaway (Dennis Moore), a smooth-talker who earned his nickname through his knack for always being "a mile away" whenever a crime is committed by his gang. O'Day not only wants to catch Mileaway, but tries to keep the teenagers from falling in with the hood. When the detective starts to get too close, Mileaway sets him up for a brutality charge using crooked shop owner Schmidt, and gets O'Day busted back to uniformed patrolman.