John Caroll loved Patricia Wyvern whom he had known since childhood, their being neighbours.
But John's uncle, Lester Charmody, mortally offended Colonel Wyvern, Patricia's father, when the former used the latter as a bodyshield when they both accidentally walked into a blast site on Charmody's grounds. Colonel Wyvern was of the old school and demanded proper apologies where he considered it due, causing a feud in a quiet countryside of Rudge. Worse for John that Pat considered him, too homely and unexciting.
Meanwhile, Lester Charmody was brooding over money problems. It was not that he had none, he had plenty. But he considered his trove pittance. Worse was his sitting on the Charmody's heirlooms which could not be sold out of the estate.
Lester's moods was not improved by his other nephew, Hugo, who pestered him for five hundred pounds to invest in a night-club with Ronnie Fish (of Blandings background).
The stalemate might have gone on indefinitely had not the Molloys insinuated themselves into Rudge Hall. An older husband to a younger pretty wife, the couple passed themselves off as a American oil tycoon with his daughter.
A plot was hatched between the Molloys and Lester to pretend to have the heirlooms stolen, claiming insurance, smuggled to America to be sold. The services of "Chimp" Alexendar Twist was secured to remove the valuables. Of course, they all planned to double-triple-cross each other.
Amidst the intrigue, Hugo Charmody and John Carroll learned that sometimes it took an enemy to provide them with a way out of their predicaments.
A very funny book, Wodehouse was meant to be enjoyed as a light-hearted book, definitely not to be taken too seriously.