The Motorway Cops come face-to-face with their worst nightmare as they are called to detain two women who are caught walking on the M6 motorway. As the PCs arrive the women make a run for it, into the path of a 44 tonne lorry. The accident forces a total closure of the M6 leaving motorists stranded in a 15 mile traffic jam and the cops locked in a life or death battle to save the injured women.