Fat Charlie's father dies while singing karioke. Soon afterward, Charlie meets Spider, his previously unknown brother. Spider proceeds to wreck Charlie's life in humorous ways. Did I mention Charlie's dad was Anansi, the spider god? You'd think I would have mentioned that first.
My interest in Neil Gaiman led me to discover Wodehouse and this book really show's Wodehouse's influence on Gaiman. Fat Charlie and Spider's relationship is straight out of a Wodehouse book. It's not hard to imagine Fat Charlie or Spider hanging out at the Drone's club.