Charged with maintaining a high security all male prison. Hewitt's first job is to gain the respect of her male colleagues. Her second - to bring under control a hardened group of murderers, violent thugs and addicts. State-of-the-art H.M. Barfield has just endured one of the worst prison riots in memory and lies virtually in ruin. Hewitt must rebuild its reputation from the inside out. But the riot is only start of her struggles as the prisoners are eager to rattle the new governor and the staff cynically distrustful of their new female boss. Add to this the daily grind of drugs, escape attempts and prison violence, and Hewitt is faced with a formidable task. Based upon the real life stories of genuine inmates at some of Britain's toughest prisons, relive the first series of the graphic, critically acclaimed ITV series.