Nicky Campbell narrates a look at how the nation's roads are policed, joining Cheshire's elite team of motorway officers as they crack down on Britain's worst drivers. In the opening edition, Amy Hollis is on the hunt for a drunk driver who has been on a late-night wrecking spree through the streets of Chester, leaving a trail of damage to parked cars.

Officer Matt Turner brings a car to a stop in the middle of the motorway, coming across an unexpected haul as well as a surprising passenger who stops him in his tracks. On a night shift, Niaz Waddington encounters a driver with no lights on and it quickly becomes clear the motorist has been drinking.

A suspected drug dealer has an unusual explanation for the suspicious contents of his car - but an even bigger surprise faces the police when they also search his home. Chris Swash is on the trail of a dangerous driver, PC Amy Hollis stops a late-night motorist running red lights in the town centre, and two drivers clash after a collision.

PC Andy Doran goes on the hunt for a suspected car thief who has abandoned his vehicle on a housing estate. After an exhaustive search, he is left with no option but to send in a police dog to sniff out the suspect. PC Amy Hollis is called to a horrific collision between a car and a motorbike. With the motorcyclist facing life-changing injuries, Amy needs to investigate how it happened. A team of officers led by PC Niaz Waddington use ANPR camera technology to track down a carload of suspected supermarket robbers. What they anticipate being a straightforward operation turns into a chaotic nightmare as the car's four occupants, high on drugs, refuse to play ball.

Inspector Anton Sullivan is left baffled by the strange behaviour of a motorist who fails to stop, while officer David Reed races to deliver life-saving equipment to a motorist with a suspected heart attack. A motorway collision has left two people stranded in the outside lane, but Niaz Waddington is struggling to get to them and there is a danger there could be another crash if he doesn't quickly secure the scene.

A driver leaves the scene after a head-on collision between two cars, leaving his daughter and her boyfriend behind in the wreckage. PC Ian Cosgrove is called out to help a driver on the notorious Thelwall Viaduct, but torrential rain threatens his rescue attempt, while a good Samaritan sees his brand new car destroyed when he comes to the aid of another motorist.

PC Amy Hollis is on the hunt for a drunk driver who has been on a late-night wrecking spree through the streets of Chester, leaving a trail of damage to parked cars, while Mike Clark is cracking down on boy racers who are terrorising the locals in Warrington.

PC Chris Swash is part of a team hunting for a gang of ruthless burglars and in a desperate attempt to escape the closing net, the men crash their car and flee on foot. Meanwhile, PC Ian Cosgrove has an emergency on the motorway to deal with after a van wheel spins off, shoots across the central reservation and strikes an oncoming car.