J. Pierrepont Finch (Robert Morse) buys a book, ''How to Succeed in Business'', describing in step-by-step fashion how to rise in the business world. The ambitious young window cleaner follows its advice carefully. He joins the "World-Wide Wicket Company" and begins work in the mailroom. Soon, thanks to the ethically questionable advice in the book, he rises to Vice-President in Charge of Advertising, making sure that each person above him gets either fired or moved or transferred within the company.