P.C. Stamp and W.P.C. Brind arrest a man who is so drunk he can barely stand. Back at the station, the man collapses after a drug overdose, but not before implying that he's killed a woman. D.C. Lines and D.C. Carver race to find the man's identity through his dental records and the local jazz clubs, but the man's wife (and his mistress) are found safe and well. P.C. Melvin is sent to inform the wife of a man killed in a factory accident, but he radios in when he suspects that he has told the wrong person. D.C. Dashwood checks at the factory, and finds it was a similarly-named man who died, and the very-much-alive husband arrives at the station to make a formal complaint.

W.P.C. Martella visits a friend of hers, Alison Page, who has been badly beaten up. Alison is on the game, and her attacker was a client. D.S. Roach arrests the man, but he is a diplomat and the Home Office demands his release. D.I. Burnside tells Roach to warn Alison's father, George Page, not to do anything stupid, but when the diplomat is beaten up, it is clear Roach did nothing to stop him. P.C. Stamp and P.C. Haynes investigate when a bookie claims his door has been glued shut. His disgruntled clients claim he hasn't paid their winnings, but Stamp convinces them to go double or quits. The relief bets on the same dog, and it wins the race.

Sun Hill C.I.D. and the Vice Squad raid six flats to catch a pornography ring. All the flats are clean except one, and it is suspected that the targets were tipped off. D.C. Dashwood saw D.I. Burnside making a phone call just before the raid, and shares his suspicions with D.S. Roach who wants nothing to do with it. Dashwood informs Ch. Insp. Conway, who calls Burnside in. Burnside insists he was calling his travel agent, and Conway checks up on it. P.C. Smith and W.P.C. Ackland pull over a car for dangerous driving, and the driver is one of the suspects in the raid. He helps Burnside catch the head man, Collins, who puts Sun Hill in the clear for the tip-off, but Burnside warns Roach he'll find out who grassed him up. Smith and Ackland stop a man from filling another man's skip with rubbish. When the dumper fails to collect his rubbish, the skip owner dumps it outside the station.

Burnside, the rest of CID and some uniform assist Flying Squad thwart a hold-up on a security van at a supermarket. Carver is not happy that a shot was fired resulting in a villian later dying of injuries. There is a bag missing from the van.

Burnside and Carver are doing a joint observation with Robbery Squad on a security van. Info seems to be incorrect as to time of holdup. Conway is on warpath. Burnside's snout is not prepared to him the correct time until her husband is safely out of the way. While trailing the husband, Greig is accosted by a man who recognises him as 'old bill' so he loses him. Viv and Melvin trail him from a pub and sets it up so he hits Viv with a car.

Burnside talks to his snout about the robbery of a video shop that was owned by the son of a dead villain who has taken over the family. An incident at a pub is thought of as being retribution of the robbery. Burnside's snout's wife is having an affair with the villain. A lady, who had been to self-defense classes run by Stamp, breaks a man's arm. Sgt. Cryer thinks she used excessive force but she tells Stamp she was being 'felt up'. Man has form for previous indecent assaults.

Lines and Carver go to a club where they find drugs in the band's jackets. The manager thinks it is very funny that a paper is interviewing the band 5 minutes before they are raided. Tosh now thinks they were fitted up not by an ex-manager but present one who is also their publicist. A man charged with drink driving and hitting a girl on a crossing is making a racket in the cells. Sgt. Peters arrests his solicitor for drunk driving.