Editing Friday the 13th (1980 film) (section)

== Plot ==
In 1958, at Camp Crystal Lake, two counselors sneak inside a cabin to have sex, where an unseen assailant murders them. In present day, camp counselor and cook Annie Phillips is driven halfway to the reopened Camp Crystal Lake by truck driver Enos. Enos warns her about the camp's troubled past, beginning when a young boy drowned in Crystal Lake in 1957. After being dropped off at the halfway point, Annie hitches another ride from an unseen person, who eventually slashes her throat.

At the camp, counselors Ned, Jack, Bill, Marcie, Brenda, and [[Alice (Friday the 13th)|Alice]], along with owner Steve Christy, refurbish the cabins. As a thunderstorm approaches, Steve leaves for supplies. Ned sees someone walk into a cabin and follows. While Jack and Marcie have sex, they are unaware of Ned's dead body above them. When Marcie leaves for the bathroom, Jack's throat is pierced with an arrow. The killer kills Marcie next with an axe. Brenda hears a little boy's voice calling for help and ventures outside, where the lights turn on. Brenda screams.

Worried by their friends' disappearances, Alice and Bill investigate. They find the axe in Brenda's bed and the phones disconnected. Steve returns and recognizes the unseen killer who stabs him. When the power goes out, Bill goes to check on the generator. Alice finds his body pinned with arrows to the door. She flees to the main cabin, where Brenda's body is thrown through the window.

[[Pamela Voorhees|Mrs. Voorhees]], a middle-aged woman who claims to be a friend of Steve, arrives. She reveals that her son, [[Jason Voorhees|Jason]], was the young boy who drowned in 1957 and she blames his death on neglect by the counselors because they were having sex instead of supervising him. Revealing herself as the killer, she attempts to kill Alice. At the shore, they struggle until Alice is able to decapitate her with a machete. Exhausted, Alice falls asleep inside a canoe that floats out on Crystal Lake. When she awakes, Jason's decomposing corpse emerges from the lake and drags her underwater, at which point she awakens in a hospital, surrounded by a police sergeant and medical staff. The sergeant says there was no sign of a boy at the lake, to which Alice says, "Then he's still there."