Documentary series following the traffic police as they enforce the law on some of Britain's busiest and most dangerous roads. When a man driving a large 4x4 is spotted on his mobile phone by the traffic cops, he refuses to pull over and instead leads them on a hair-raising pursuit through the backstreets of Swansea that ends in a nightmare. It is a case of road rage unlike any other, during which the pursuing patrol car is crushed and its driver lucky to escape with his life.