The Rover brothers spend time at Putnam Hall and on a camping expedition in this entry to the series. They have a new set of rivals, let by lanky, surly Lew Flapp, a would-be boxer. Rover family nemesis, Arnold Baxter, is on the lam from prison. Also returning, the largely-unintelligible Hans Mueller and various other good boys from the military academy. - Summary by Matt Pierard