When Bertie Wooster goes to stay with his Aunt Dahlia at Brinkley Court and unexpectedly becomes engaged to the imperious Lady Florence Craye, disaster threatens from all sides.

While Florence tries to cultivate Bertie's mind, her former fiancé, hefty ex-policeman "Stilton" Cheesewright, threatens to beat his body to a pulp, and her new admirer, the bleating poet Percy Gorringe, tries to borrow a thousand pounds.

To cap it all, there's a jewelry heist; plus, Bertie has incurred the disapproval of Jeeves by growing a mustache. All in all, it's a classic Wodehouse farce.