A light hearted look at how to use a 16mm film projector. The film uses the device of showing the wrong way to approach the task followed by the correct method, but watch for the hilarious 'twist in the tale'. This gentle, humorous film stars the wonderful Graham Stark as the hapless projectionist and the genial Frank Williams (Dad's Army) as the vicar.

When Fred Watson's wife and landlady disappear, and he is seen papering over two cupboards in his bedroom, the police are called in.