Having dispatched Aunt Agatha's young son Thos to his seaside borstal, Bertie Wooster intends to pay a visit to Deverill Hall to lend a hand with the village entertainment while impersonating Gussie Fink-Nottle. He soon ends up in a fix. Gussie Fink-Nottle is currently enjoying fourteen days away from society after being caught taking an unscheduled five a.m. dip in the Trafalgar Square fountain. Unfortunately, he is due at Deverill Hall that very evening. And if his fiancee Madeline Bassett gets wind of his escapade and arrest, the engagement will be called off immediately - leaving Bertie Wooster in prime position for her to ambush into matrimony. So Bertie treks down to the Hall to impersonate Gussie in order that awkward questions might remain unasked. And he seems to be pulling it off - until Gussie turns up disguised as Bertie...