Duckers, Jimmy and Ray are three work-shy security guards at a shopping mall who spend much of their time mocking their Jobsworth boss Kenneth. One night they bunk off to watch and bet on a boxing match at the electrical shop, only to find on their return that the mall’s jewellers has been robbed. To save face - and their jobs - they bring in computer ace Rhys to help concoct a new CCTV film in which two of them pose as robbers and the other two pursue them but lose them. It looks very genuine but P.C. Greaves has his doubts. Can they get away with it?