American ex-pat Mickey Pearson built a highly profitable marijuana empire in London. When word gets out that he's looking to cash out of the business forever, it triggers plots, schemes, bribery and blackmail in an attempt to steal his domain out from under him.

Three on a couch: Christopher Pride (Jerry Lewis) has been offered an important art commission in Paris but can't convince his girlfriend, Dr. Elizabeth Acord (Janet Leigh), to take some time off from her psychiatric practice. Elizabeth is worried about three of her female patients, all of whom are extremely hostile toward men and very needy. Christopher, anxious to leave for France, decides to impersonate the ideal man for each of Elizabeth's patients...