The firearms team race to the scene of an alleged shooting, only to find themselves embroiled in an unconnected domestic incident. Elsewhere in the north of Nottingham, the knife crime team recognise the familiar face of a dealer they busted six months previously with a car full of cannabis.

Officers hunt for three teenagers alleged to have threatened a shopkeeper with a gun. Two are swiftly put in cuffs, but one suspect seems to have vanished into a block of flats. Elsewhere, Jen and her crime-busting canine Quantum are called to intercept a burglar who's ransacking a school in the dead of night.