A small Michigan lake town is threatened when an infestation of aggressive lampreys floods the reservoir and gets into the water system, sending the community into a desperate struggle for survival against these eel-like creatures that seem to be feeding aggressively on the fish population. As the bodies pile up, the main protagonists - Jason Brooks and Shannen Doherty play - must navigate a series of gruesome attacks that bring their town to the brink of chaos. With Christopher Lloyd as the mayor who refuses to shut down the lake despite the carnage unfolding around him, this creature feature is a cheesy, self-referencing delight that's equal parts horror and comedy.