The basis of the story is that Bertram Wooster moves to the English countryside because his neighbours and butler hate his banjolele playing. (I didn't know what it was either until I looked back at the front cover and realised how stupid I was being). So Bertie, after receiving notice from his butler Jeeves, retires to a home far away from anyone who can discourage his musicality.
The novel ends much the same as it started, the only difference being Jeeves who has replaced the banjolele.
An adult with a sense of humour and a love for annoying posh people would be the most suitable reader for this book. But any grown up would do.