After sales figures plummet following truth in ads, The Goodies come up with other product options.
Tim suggests that String is a pure, wholesome product, and Bill and Graeme agree to exploit it.
Later, Tim watches his favourite television programme Tomorrow's World, and is again horrified — this time because string is a failure as a product.
He then discovers that some mysterious men are making a lot of money by keeping a stockpile of string, so that the world is dependent on them.
Tim is furious and intends to put Graeme's and Bill's string empire out of business.