Almost a century ago, the residents of a small upstate New York town were drowned by the creation of an artificial lake. Now, all these years later, their restless souls still reside at the bottom of that lake, and every thirteen years they come back, looking to fill the lake... with the living! Rebecca (Tatum Adair) has just lost both of her parents to an unfortunate accident. In mourning, she goes to the small town of Rushford Lake, where she and her parents used to spend summers. Once there, however, she bears witness to a series of horrific events... the living dead are rising from the lake, with an apparently insatiable appetite for new souls. Clinging to her last shreds of sanity, Rebecca must uncover the truth behind the lake, break the cycle, and keep the dead where they belong.