Billy and Ricky tangle with some ornery water moccasins and wasps. Ricky gets stung in the face by the wasps--and he's allergic...and miles from help! And at another job, it's Billy vs. the Beaver when the critter wreaks havoc at Twin Lakes Camp. The beaver is building its dens by tearing down the levees that have kept the lakes in place for 30 years. Without the lakes, how can Twin Lakes Camp survive?