Karl Edwards has fallen in with the wrong crowd. He has become involved with a teenage gang on his housing estate in South Wales. At first it had seemed harmless enough, but things turn ugly when old Mrs Evans is seriously injured by a brick thrown by one of the Gang. This is just the start of a string of brutal crimes as the Gang descends into lawlessness. Karl finds himself increasingly drawn to the youth club at the church, but Jed and Cooper, the Gang's leaders, rule through intimidation and fear. They have been watching Karl, and they will not permit gang members to have divided loyalties.