William is an unsuccessful guinea pig for a medical group interested in researching the common cold. He is soon fired and offered a job by the nearby National Atomic Research Center where they figure anyone who could fail at being a guinea pig is just what they need. They con William into thinking he will continue his guinea pig career by testing out some equipment for them before they send a group of astronauts to the moon.
Kenneth More
Shirley Anne Field
Norman Bird
Michael Hordern
John Glyn-Jones
Charles Gray
Bernard Horsfall
Bruce Boa
Noel Purcell
Ed Devereaux
John Phillips
Edward Burnham