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 extreme road rage, another officer is punched when they race to save a taxi driver, and a man spits in the face of a Nottingham copper.
Two officers are called to a property in Llanelli and are taken by surprise when a man armed with a knife runs out of the house and threatens them, while in Stoke-on-Trent Sgt Durose and a colleague resppond to a 99 call to find a man with a knife is holding a woman hostage and threatening all and sundry.
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
A single-crewed officer in north Wales spots a gang of suspected burglars making off in a powerful car, leaving PC Emma Birrell to give chase in a high-speed pursuit. In Hereford, police driving past a local nightclub spot a bouncer being verbally abused. They stop to help and PC Natasha Markham soon finds herself arresting the man, but he has no intention of going quietly and attempts to grab her crotch. When backup arrives, they take the man into custody, where the verbal abuse and assaults continue.
