The story typically involves a series of brutal killings at Camp Crystal Lake, with Jason Voorhees as the main antagonist. Jason was believed to have drowned as a child, and now he terrorizes the campgrounds seeking revenge.
Jason Voorhees was a character who was believed to have drowned as a child at Camp Crystal Lake. He later returned as a vengeful killer. It's a classic horror story setup.
No way. Friday the 13th is just a made-up horror tale. There's no truth behind it. It's all about scaring movie-goers and having fun with the horror genre.