In the September of 1973, 15-year-old Terry Sutter mysteriously vanished after hanging out with friends. The next day, his body was discovered on the beach by Lake Michigan. 

At first, this tragic event was suspected to be completely accidental, but as time goes on, we realize that there's a twisted secret behind it. Even with the little information that we have, one thing we all know for certain is that someone knows something. What really happened to Terry Sutter?