Norman Hackett (Norman Wisdom) is employed in a jeweller's workshop and is innocently preoccupied with dreaming of meeting the window dresser in the shop across the street from his workplace. He wishes to purchase a diamond pendant for her and, after persuasion, gambles a pound on a six-horse accumulator at the Goodwood races. The bookmaker grows concerned when it appears Hackett, after winning on the first five races, could win over £16,000.