 As the trail on their father goes cold, Sam and Dean find themselves in a small town in Wisconsin where 3 people have disappeared without trace in to a lake in the past year alone. Soon, the dam holding the water for the lake will burst and the town will be lost forever. The spirit causing the disappearances begins taking more and more people as it is running out of time. Sam and Dean must figure out who the spirit is and put it to rest before anymore people are taken and lost forever.