Ch. Insp. Conway is late for a meeting with a Mr. Trevelyan from the Department of Trade and Industry, who wants police help in shutting down Radio Sun Hill, a pirate radio station. Conway orders the winos who blocked his car taken off the streets, but when one of them tries to escape from his cell, Sgt. Cryer recognises him as an undercover cop. P.C. Smith asks W.P.C. Martella to talk to a lady who has been beaten up by her boyfriend. She changes her mind about pressing charges as she doesn't want her husband to know. She then explains the injuries by saying the police beat her up, and her husband turns up and attacks Yorkie. Despite D.S. Roach's objections that it's a waste of police time, Carver and Dashwood raid Radio Sun Hill, but they escape.