Take Gussie Fink-Nottle, Madeline Bassett, old Pop Bassett, the unscrupulous Stiffy Byng, the Rev., an 18th-century cow-creamer, a small brown leather covered notebook and mix with a dose of the aged aunt Dahlia and one has a dangerous brew which spells toil and trouble for Bertie and Jeeves.

Follow the adventures of Bertie Wooster and his gentleman’s gentleman, Jeeves, in this stunning comic novel. When Aunt Dahlia demands that Bertie Wooster help her dupe an antique dealer into selling her an 18th-century cow-creamer, Dahlia trumps Bertie's objections by threatening to sever his standing invitation to her house for lunch, an unthinkable prospect given Bertie's devotion to the cooking of her chef, Anatole.

A web of complications grows as Bertie's pal Gussie Fink-Nottle asks for counseling in the matter of his impending marriage to Madeline Bassett. It seems Madeline isn't his only interest; Gussie also wants to study the effects of a full moon on the love life of newts. Added to the cast of eccentrics are Roderick Spode, leader of a fascist organization called the Saviors of Britain, who also wants that cow-creamer, and an unusual man of the cloth known as Rev. H. P. "Stinker" Pinker.

As usual, butler Jeeves becomes a focal point for all the plots and ploys of these characters, and in the end only his cleverness can rescue Bertie from being arrested, lynched, and engaged by mistake!