A call about a robbery and assault leads to a hunt on Humberside police's patch and after a chase on icy roads, the occupants abandon the vehicle and run. While the suspects may think they've evaded capture, PC Moff McEwan and his colleagues from the dog and drone units have other ideas. In Scunthorpe, a catastrophic road traffic collision between a delivery van and a car results in the occupants needing hospital treatment and the air ambulance being called. Moff and Dan Wright must get to the bottom of what's caused this devastating crash and quickly acquire dashcam footage that firmly points the finger at one of the drivers