The dark and dangerous world of international espionage... for laughs.
STENCH (Society for the Total Extinction of Non-Conforming Humans) have stolen a top secret chemical formula. Unfortunately the only agent available to try and retrieve the formula is bumbling Simpkins (Kenneth Williams) and his three trainees (Barbaras Windsor, Charles Hawtrey and Bernard Cribbins). The four are sent to Vienna to look for the STENCH agents Fat Man and the Milk Man and link up with Carstairs (Jim Dale) to help, unfortunately they prove much more of a hinderance than a help!
Following more hijinks in Algiers and on a train, the four agents end up with the formula but also prisoners of STENCH and the evil Dr Crow (Judith Furse). Can they somehow save the day and foil the evil STENCH?
This is a great send-up of the 1960s spy genre, its packed full of satirical references to other films and TV series. It also has the usual double entrendres, campy humour and a bit of sauce. Not quite the best Carry On film, it lacks the energy and slapstick of the series at it's height, but certainly a good film and pretty funny.