When the redoubtable Sir Horace Stanton-Lacy is ordered to South America on business, he leaves his only daughter Sophy with his sister, Lady Ombersley, in Berkeley Square. But Sophy's cousins are in a sad state, and she's arrived just in time to save them all. But she hadn't reckoned with Charles Rivenhall, the Ombersleys' heir, who is very unappreciative of her efforts.
