A group of young railway enthusiasts attempt to stop the closure of the local railway by trying to raise money to buy it and the steam engine "Matilda." They get help from a pair of men claiming to be enthusiasts but who turn out to be robbers who plan to hold up the mail train
John Moulder-Brown
Roberta Tovey
Sydney Tafler
Ronnie Barker
Graham Stark
Jon Pertwee
Hugh Lloyd
Kevin Bennett
Leonard Brockwell
Roger Avon
Bruce Wightman
Jack Allen
Gerald Case
Katie Fitzroy