Phineas T. Barnum and friends finance the first flight to the moon but find the task a little above them. They attempt to blast their rocket into orbit from a massive gun barrel built into the side of a Welsh mountain, but money troubles, spies and saboteurs ensure that the plan is doomed before it starts...
Burl Ives
Troy Donahue
Gert Fröbe
Hermione Gingold
Lionel Jeffries
Dennis Price
Daliah Lavi
Stratford Johns
Graham Stark
Terry-Thomas
Renate von Holt
Jimmy Clitheroe
Judy Cornwell
Joachim Teege
Edward de Souza
Joan Sterndale-Bennett
Allan Cuthbertson
Derek Francis
Anthony Woodruff
Hugh Walters
Donald Bisset
Cecil Nash
Vernon Hayden
John Franklyn
Harry Brogan
Derek Young