On his arrival at a plush London casino, The Optimist discovers that he has become an instant celebrity. What he doesn't know is that he is actually the identical double of the Boss who owns the club.
Working as a humble cobbler, The Optimist is thrown into an international world of crime and classical ballet when a diamond is stolen - the famous Light Fantastic.
The Optimist goes racing, meets the lovely Sal and becomes a stable boy. He saves the aptly-named horse Nutter from being sent to the knackers yard and lovingly prepares him for the big race
Out jogging, The Optimist realises that is totally unfit and decides to enrol himself at a health farm, but soon discovers the place is more like a prison run by the scary Matron
Dressed for the "wild west", The Optimist sets out for a 'Dude Ranch' and is introduced to the riding instructor, although he finds that a rival is already in her favours.
The Optimist imagines himself on an exotic beach where he falls in love with The Girl despite his misadventures learning to surf and dancing at the nightclub.