End-of-summer camping is supposed to be a peaceful experience. Jen just wants her parents to stop fighting long enough to roast s'mores, Donna is scheming to overcharge rubes for fireside tarot readings, and Jerry is looking to finish a few cheap beers in peace. But at Lake Lobo, not everything is as it seems. Beneath the dark waters, evil is rising—and if the campers want to make it out alive, they'll have to fight for their lives.