Flinx ends up in Midworld after fleeing a planet being chased by a local merchant/crazy who for some reason feels he must possess Pip. As usual, Flinx finds new friends and saves them as they save him. The Midworld flora and fauna were very interesting, however, the whole story was a little thin. Basically, Flinx ponders the reality of the great evil he has learned of, while admiring the beauty of this new planet. Obviously, Mid-Flinx is merely a placeholder while Foster ponders how to wrap up his big idea about the nature of evil. Also, this is the last Flinx book to date...so it doesn't look like we'll find out the answer for a while.