 On the way to a cheerleading competition, the bus gets a flat near the place that scarred Ron for life: camp Wannaweep. They attempt to call for help, but the girls  cell phones are not getting any service, and the Kimmunicator is out of commission, too. Since Ron knows the lay of the land, he leads them to a pay phone, but it is not working either. In the tradition of teen horror flicks (which the episode lampoons) they must stay the night. They make a campfire, where Ron proceeds to tell horror stories of the worst summer camp of his life, including one about the toxic lake Wannaweep, and how he traded with a boy named Gil so that he could do arts and crafts all summer. Barkin and Kim become fed up with the stories, so they go to get more firewood. While Kim has her back turned, a strange creature captures Barkin. She runs back to the campfire and reports this to Ron, who suggests that they all move to Cabin 13, the cabin in which used to stay. Once inside, they hear Barkin calling to them from the outside. Kim and Ron race out to find him covered in muck, then realize that the creature who did this to Barkin is now inside the cabin. The creature turns out to be none other than Gil, though he has now changed his name to Gill. Gill reveals that he was mutated by the polluted water of the lake and that exposure to the muck, which by now has pinned down everybody except Ron, will turn a normal human into a mutant, just like him. Ron makes a run for it, using a tunnel in the floor of the cabin to escape. Gill follows him, bursting through the floor of another cabin, unleashing a flurry of muck. Ron escapes and constructs a net while Rufus repairs the engine of a motor boat. The two go out on to the lake, but run out of gas. Gill ambushes Ron, who traps him with the net, then signals to Rufus to start the boat, which was never out of gas. The boat smashes into the pier, taking Gill with it. The authorities arrive the next morning, along with a scientist who promises to try and reverse Gill s mutation.