Jason is ambushed by the FBI and blown to pieces... but during the autopsy at the Federal
morgue in Youngstown, Ohio, the coroner is possessed by Jason's heart. A week later
Diana Kimble, a waitress at Joey B's Diner in Crystal Lake, watches
"American Casefile's" report on the disappearance of Jason's body and the coroner and
the death of the coroner's assistant and two FBI agents. AC host Robert Campbell
offers famed bounty hunter Creighton Duke $500,000 to kill Jason if he is, as
Duke claims, still alive. Meanwhile, the Diner is celebrating Jason's "death." Diana
comes face-to-face with Duke, who asks for her help and tells her he knows
who she "really is." Diana's boyfriend, Sheriff Landis, has Duke taken out to
his cruiser.
That night, Steven picks up three hitchhikers and takes them into Crystal Lake to
"have a little premarital sex, smoke a little dope." When he leaves the three, the
redheaded girl is sliced up with a scalpel and the other two are split open with a
spike. The Coroner returns to the diner and kills Edna, who is having an affair with
Josh. He takes Josh back to the Voorhees house, where he transfers the
evil heart into the deputy.
Diana talks to her daughter Jessica, who is now dating American Casefile's Robert
Campbell. They are interrupted by the now-possessed Josh, who attacks Diana.
When she sees Jason's reflection in the mirror, she shoots him in the head.
But Josh doesn't stay down, and Steven comes in to find Josh and Diana struggling. When
he separates them Josh accidentally hits Diana with a knife-sharpening pole in the back.
Steven runs Josh through with a fireplace poker and pushes him out the window. The
sheriff arrives to find Diana dead on the floor. Steven protests his
innocence but when he looks out the window Josh is gone. Steven is taken to a holding
cell.
Jessica arrives at the station to take care of business, and Steven sees her - and their
baby daughter - while he's being moved. In the cell, Creighton Duke gives Steven the
information he needs to know - Diana was Jason's sister, and he needs a blood relative
to be reborn in his own body. With Diana dead, his only remaining family members are
Jessica and her daughter Stephanie. To protect them, Steven breaks out of jail. He goes
to the Voorhees house, where he hears Robert Campbell outlining his plans to spice up
American Casefile's Jason coverage with his theft of Diana's body. But Josh bursts in
and transfers the heart into Robert. Josh's body melts away and Robert leaves.
Steven catches up with Robert at Jessica's house and runs him over. Jessica doesn't
believe Steven's explanation and throws him out of the car. She runs into the police
station and deputy Randy is sent to retrieve Steven. Meanwhile, Robert begins a
massacre at the police station. Steven and Randy arrive as Robert tries to transfer
the heart into Jessica. Steven steals Randy's gun and shoots Robert in the head.
Jessica and Steven head to the diner with Robert in hot pursuit. Stephanie is gone but
there's a note which Jessica doesn't tell Steven about. When she takes off, Steven
sees the note and arms himself with a machete from the wall.
At the Voorhees house, Creighton Duke waits with Stephanie. He tells Jessica only she can
kill Jason and gives her a knife and warns Jessica that Jason could have jumped into
anyone. . . but he falls into the cellar just as the Sheriff arrives, quickly followed
by Randy. The Sheriff lunges and impales himself on the knife. Then Randy grabs
Stephanie and tries to transfer the heart - but Steven runs in and slams the machete into
his neck. Jason's mutated heart, now a Hellbaby, escapes through the neck wound and
climbs down into the cellar, where it finds Diana's corpse.
Now reborn, Jason bursts up from the cellar. Duke is bearhugged to death while trying
to protect Steven and Jessica. Steven gets thrashed by Jason while Jessica tries
to retrieve Duke's knife from the cellar. . . who will survive to send Jason to Hell?
