Gary attempts to buy a second-hand car. What should be a straightforward task is turned into something of a quest by various people, including dodgy East End car dealer Perry, Perry's taxi-driver dad, a garage owner called Derek, Perry's wife Debbie and couple of twins.
After their production "Princess Ida" meets with less-than-stunning reviews, the relationship between Gilbert and Sullivan is strained to breaking. Their friends and associates attempt to get the two to work together again, which opens the way to "The Mikado," one of the duo's greatest successes.