When the redoubtable Sir Horace Stanton - Lacy is ordered to South America on Diplomatic Business he parks his only daughter Sophy on his sister in Berkely Square.
But Sophy's cousins are in a sad tangle. The heartless and tyrannical Charles is betrothed to a pedantic bluestocking almost as tiresome as himself; Cecilia is besotted with a beautiful but quite feather- brained poet; and Hubert has fallen foul of a money- lender.
It looks like the Grand Sophy has arrived just in time to sort them out, but she hasn't reckoned with Charles, the Ombersleys' heir, who has only one thought - to marry her off and rid the family of her meddlesome ways...