The Big Dam Monster is an ancient creature that patrols this small, manmade lake. Every few decades, when the water level dips dangerously low and the fish population is threatened, the Big Dam Monster has been known to come to the surface and wreak havoc on the local population of fishermen and summer vacationers. Unfortunately for these carefree teens partying at the edge of the dam, their night of illicit, drunken fun is about to be cut short by this local denizen of the deep.