Aunt Agatha intends to engage Bertie to "a nice quiet girl" named Aline Hemmingway. Bertie is forced to spend some time with Aline and her brother, Rev. Sidney Hemmingway, but finds them dreary. After Sidney loses money at the races, he borrows £100 from Bertie with Aline's pearl necklace on deposit. Coincidentally, Aunt Agatha's pearl necklace goes missing. Biffy Biffen cannot find a girl to whom he was engaged. He comes to Jeeves for help, but Jeeves, who happens to be the girl's uncle, misunderstands Biffy's intentions and does not wish to help. (thetvdb.com)