Head of Cheshire Constabulary's Fleet Services, John Heussi, is preparing himself for two weeks of well-earned sunshine and adventure. With 57 builds currently in progress John wants to make sure nothing gets missed and hands over what proves to be a busy fortnight for the team at the Vehicle Maintenance Workshop.

Dave has a BMW X5 armed response vehicle build to oversee and ensure is completed by the time John gets back. He also has to repair the dive team's truck and a crime car damaged during a high-speed chase as well as preparing for a last-minute visit from the local MP.

Will John return to chaos at the Vehicle Maintenance Workshop, or will Dave have it all under control?

The North-West Underwater Search and Marine Unit covers six police forces from the bottom of Scotland to the bottom of North Wales. When their police boat is crushed in an incident, Inspector Dave Corcoran calls on his best mate, John Heussi, to turn what looks like a tug boat into a police vessel. John is only too happy to accept the challenge.

Meanwhile, back at the Vehicle Maintenance Unit, the team have to fix up a beat car whose tyres were slashed whilst on duty, John's favourite vehicle is returned in a less-than-pristine condition, and there's an ongoing investigation into Darren's facial hair.