Acid Row. The name the beleaguered inhabitants give to their 'sink' estate. A no-man's land of single mothers and fatherless children - where angry, alienated youth controls the streets. Into this battleground comes Sophie Morrison, a young doctor visiting a patient in Acid Row. Little does she know that she is entering the home of a known paedophile . . . and with reports circulating that a tormented child called Amy has disappeared, the vigilantes are out in force.