Called to an old hanging post after a man thought to be drink driving, two officers end up fighting for their lives. A suspect bites a police dog and attacks his handler, and a traffic officer is dragged into a busy road by a violent motorist.
PC Mark steps in front of a car to ask the driver to stop, but the driver uses his car as a weapon. A criminal in handcuffs steals a police car to use as a getaway vehicle, with the officer still inside it.
After a knife falls out of a criminal's pocket in Bedford, it takes three officers to get him in cuffs. Meanwhile, a local bobby is knocked out cold after a pub-goer launches an unprovoked attack.
PCs Ben, Launa and Rafal thought they were attending a simple case of neighbours arguing, but the emergency call was a trap to lure the officers to an attacker's door. Meanwhile, PC Carroll happens across a street mugging.
PC Mike Davey and his police dog Bacca are faced with a man armed with knives. Meanwhile in London, a routine car stop late at night suddenly turns into a life-threatening incident when the driver jumps in his car and drives off and PC Nick Morley is left clinging to the car door.
A late-night patrol pulls over a man suspected of driving under the influence, but they soon find themselves dealing with much more. Meanwhile, officers responded to an emergency call by residents on an estate.
In Southampton, a Friday night in town descends into violence. Sergeant Nicolas Tucker is single-crewed and the first on scene. He identifies a suspect, but before he can cuff the person, he is left on the floor after someone sucker punches him.
Officers in North Yorkshire responding to a report of anti-social behaviour have to deal with a violent bystander as well, who breaks the leg of an officer while resisting arrest. In North Wales, a police van on its way to a domestic disturbance call-out is flagged down by a member of the public, who alerts the officers to a drunken confrontation between two groups of young people.
A police officer is a victim of road rage and another officer is punched on duty.
A violent man slashes a bobby, an officer is injured, and a patrol ends with a choke hold.
An arrest turns violent for 3 officers; two men attack police sent to help them.
A domestic situation in Stoke turns violent; a man armed with a knife rushes Welsh police.
A South Wales officer is bitten on the finger while trying to make an arrest, while new policewoman finds herself separated from her colleague and facing an angry young man - who decides to attack her. In south London, two Metropolitan Police officers respond to a 999 call and PC Gray climbs into a dark room through a broken window and soon finds himself facing a man who is armed with a shovel.
