When a spate of bomb hoaxes begins to threaten peace and harmony in Sun Hill, Brownlow becomes eager to find the hoax callers and stop chaos from breaking out. Meanwhile, Galloway bets Cryer he is the perfect man to solve the case, recruiting Roach and Dashwood to help him. Cryer gives Carver the responsibility of showing a newly qualified officer, Higgins, the ways of Sun Hill - but a run-in with a local drunk who later accuses Carver of stealing his wallet leaves every officer on the uniform relief wondering if Carver is capable enough to do the job without bringing the social aspect into disrepute.

Sgt. Cryer is taking half the relief out on Sun Hill's annual fishing trip. P.C. Smith and D.C. Dashwood go to serve a warrant on Russell Archer over a non-appearance in court on a poaching charge. Archer manages to escape from Dashwood and Smith, and is later seen menacing a milkman with a sawn-off shotgun. He later holds up a bookies and a greengrocer, until he is spotted by P.C. Carver and P.C. Frank. who give chase. Frank is shot and wounded during the chase, and Archer ends up taking an elderly woman hostage in a retirement village. With the fishing trip cancelled, D.S. Roach takes charge of the siege operation until D.I. Galloway and Ch. Supt. Brownlow arrives. Attempts to contact the increasingly unstable Archer fail, until he asks to speak to Sgt. Cryer whom he saw in the betting shop. Cryer enters the flat, and attempts to talk Archer into giving himself up. With W.P.C. Ackland posing as a Meals-on-Wheels driver, Galloway, Roach and PT17 officers storm the flat and shoot Arche

Conway decides he needs to get back on the beat, and arrests a drunk for criminal damage.

Boyden deals with a man stopped for soliciting who claims he was searching for his missing daughter.

Tosh Lines and June Ackland investigate the death of an old acquaintance.