On graduation night, Julie, Helen, Ray and Barry get into Barry's new car and rush off into the night. No one sees the body that seems to fly out of nowhere directly into the new car's grill. There is only one way out of this nightmare, only one place where the body can never be traced back to them ... and as they push the body off a seaside pier, they think their secret slides into the murky depths with it. They're wrong.
The four friends swear to take their secret to their graves. But that time might come around sooner than they think. Someone is stalking them. Everywhere they go, he is there. He knows who they are. He saw what they did. One by one, he will bring the same terror to them that they brought to the stranger whose only crime was being in the wrong place at the wrong time.