Unfortunately, a series of bizarre watery deaths interrupt Lloyd's destructive binge when his step-brother, the Sheriff, enlists his help to stop the killings.
In Lloyd's quest for answers, he meets twelve-year-old Todd Grafton - a deaf boy who spends his evenings with his telescope studying the silent night sky over Green Bay. When, one night, Todd spots someone he thinks is a super hero, he decides that he wants to be a night swimmer, too.
Together, Lloyd and Todd discover that pristine Chamber's Island may be the home to an ancient evil: the Swimming Man.