Sid Carter (Sydney James) is a leader of a gang of thieves and he persuades his son Cyril (Kenneth Cope) to dress up as a female nurse and infiltrate the "Finisham Maternity Hospital" so that he can get the gang a plan of the place enabling them to steal vast quantities of "The Pill". "I know a couple of countries who'll go mad for the stuff" says Sid.
Occasionally funny entry in the long running series. The funniest moments include the scene where the Matron (Hattie Jacques) visits the registrar Sir Bernard Cutting (Kenneth Williams) in order to bring him his morning post. Sir Bernard is a proper hypochondriac who thinks he's on the verge of a sex change, "Your mail" says Matron handing him the letters, "I know and I can prove it do you hear prove it" screams Sir Bernard not aware of what she really meant. Another stand out moment is when Syd Carter and his gang arrive at the hospital to pull off the raid, Syd is disguised as a doctor sporting a laughable beard and dark glasses. "I am Dr Zhivago" he says. When the film isn't funny it gets by because it possesses a charm that many of the other less funny Carry On's have, a charm that one journalist described as "an England that never was" and besides that there is the assured presence of all the regulars including Charles Hawtery, Joan Sims, Barbara Windsor and Bernard Bresslaw, but Kenneth Williams, Hattie Jacques and Syd James ultimately steal the show.
