Colin is out and about in Exeter with his dog Raven, and has been called in to assist some local officers with the dispersal of a bunch of people who've just left a pub. It is, as usual, alcohol fuelled, and there have been three callouts already thanks to the activities in the streets. Raven, muzzled so they can get right in amongst the crowds without the risk of anything more than flecks of drool on their clothes, is deployed and they head in to get people to move on. Needless to say, there is a hard core of obnoxious types – largely made so by drink – who have no intention of doing as bid, so there is no option other than to start making arrests. One of them attempts to flee, but is quickly apprehended and taken in, while another, who has been problematic for much of the night, just can't do what he's told and is still lurking. One arrest therefore is about to become two – or at least that's what Colin's planning until someone else comes along and distracts him. Taking the opportunity, the mouthy one flees – but doesnt get far as he is, in turn, distracted by an arriving police car and runs straight into a bollard.

Off with the TAG to raid yet another cannabis factory in Newton Abbott one of the growing number responsible for the about-turn of cannabis growing which means that now 90% of the stuff is home grown rather than imported. As the suspect is potentially armed, the tasers are broken out, just to be on the safe side. Maintaining the element of surprise, they park up some distance away and come in on foot, before tiptoeing up a metal staircase and slamming in another TAG flap. The suspect is asleep – tucked up on a sofabed. Fortunately there's no weapon, but there are hydroponics tents – two of them. The only problem they have now is which of the plants they need to seize for evidence amongst the veritable forest of weed before disposing of the rest once a yield has been calculated. Then they have to get all the rest of the equipment out – including a large trough full of water and absorbent beads. Lovely.

Roger and Giles are perched over the M5 again. They are advised that a transit van heading their way has no insurance; so, once it passes, they get behind it and pull it – and the caravan it's towing. Once again, he's insured under a trade policy, but it turns out that his newly purchased caravan has plates that don't match the van. They're new too, and it turns out that the garage he bought them from has fixed on the wrong ones, so he gives the garage a flea in the ear – followed by a sympathy driven lecture from Roger. That sorted, they have the issue of insurance to deal with. The driver states that he's bought and sold the van twice – but he is insured. Finally, there's just one more thing to do: dip the tank for red diesel. And it's here that the driver comes unstuck, with a nice dribble of bright red fuel syphoning into the dipper bottle. This means the seizure of the vehicle for Customs, but they won't want the caravan, and neither do Roger or Giles.

Back to Japan, to rejoin the Black Panthers in their ongoing battle with the moped gangs. Armed with mounted stills cameras and their paintguns that decorate fleeing vehicles or people with a cheery neon orange colour. Behind an unlicensed rider, they have to get right in close, and this inspires a kicking contest as the pursuing officer tries to kick them over, while the pillion passenger kicks back. For once, the rider gets away from the bike, but Inspector Morita is nearby in his command car, and this time it's the car that wins out.

Back in Blighty, Gareth is on patrol in Exeter when a transit van bombs past him despite being in a 20 MPH zone. Once behind it, he has trouble persuading the driver to stop, but once it does, the driver freely admits that his failure to do so is down to being drunk – something which he demonstrates by hitting the horn with his elbow as he exits. The passenger has been drinking as well, and seems far more dismayed at events than the driver. Amazingly, the passenger then asks Gareth – on camera – if he could just turn a blind eye and let them go. Gareth is, understandably, offended at such a suggestion, and puts the man right in his place. Even as the Driver calmly accepts what's happened, the passenger then wanders off, and has to be brought back again. It turns out that his behaviour is inspired by a sense of guilt, as the only reason the driver was in the van at all was because he was giving him a lift home. Incredibly, the driver is incredibly forgiving and makes it clear that what's done is done – and not to worry about it. Now that's friendship.

Chris is on his own in the car today in Crediton, and soon finds himself behind a suspicious looking car. Radioing in to Taff who is back at the Bat Cave, he is advised that the car has a marker on it and that he should stop it as it has no insurance. The driver is the registered keeper, but claims it belongs to his dad – and also that he's driving it under a trader's policy. As Chris is alone, Roger comes along to help out and searches the car. He finds some fairly clear signs of drug use in the car, and a rather nastly looking collection of poles and handles in the boot. Meanwhile, Chris is going through the driver's mobile and comes across a text referring to 'bud', from someone who the driver immediately claims not to know. Needless to say, this doesn't inspire belief. When questioned about the contents of the boot, the driver claims that that he picks up bits and bobs as he clears gardens. This, however, is the least of his worries, as the insurance company have told Chris that the car isn't covered and – no matter what the protests – it's getting seized.

Roger and Giles are back together and in Torquay behind a motorist who is on their suspects list, as he drove away from another officer when approached earlier in the evening. This time, however, the driver stops, though his gait is rather awkward as he exits the car, leaving two rather slobbery looking dogs in the back. As one of the pair is going to have to drive the vehicle back to the nick for the searches, Giles is particularly eager to know if the dogs will let him in. As the driver claims one of them is 'a bit funny', ever generous in handing out experience to their attached officers, Giles delegates the task to Luggy. During the drive back, with two dogs slobbering in his ear, Luggy is given a confession – the driver has a stash of cannabis hidden somewhere on the private side. No wonder he was walking funny.