Fred and Anthony plan to spend summer vacation in Fred's basement, watching horror movies and eating Pez and Chex Mix.  Instead, the boys are shipped off to Camp Plenty Wampum, where their nights are spent shivering around a sputtering campfire listening to stories about the camp's notorious Burnt Marshmallow Mummy.Things start looking up the day their canoe sinks in Lake Gitchi Lagooni, and Fred and Anthony discover that it is really the infamous Black Lagoon-and another portal to the Netherworld.  The boys decide to make some wampum of their own by giving guided tours.  They even meet a cute, harmless little fellow called a Heinie Goblin who entertains the kids, and soon Fred and Anthony are raking in the dough.But when a couple of the more tender-hearted girls take the Heinie Goblin back to camp, the creature begins to multiply by the hundreds and mayhem ensues.  In no time, Camp Plenty Wampum looks more like Camp Plenty Heinie Goblins, and Fred and Anthony once again find themselves in plenty big trouble! Read Less