In the disguise of Pamela Voorhees (the only person to whom Jason will listen), Freddy convinces Jason to kill teenagers living on Elm Street to make the residents of Springwood, Ohio think that Freddy is back.
Jason first kills a boy named Trey after he and his girlfriend, Gibb have sex at a house party, which is blamed on Freddy. A group of youths, including Lori Campbell, Kia, and Gibb are questioned and Lori hears Freddy's name said by one of the police officers. The group is then sent to the police station, where Lori dozes off. In her dream she sees girls skipping rope and singing Freddy's theme song. In the real world, Freddy tests his power gained from Jason's attack. Although he is able to be seen by Blake, (one of the teens partying at Lori's house) Freddy cannot cause any damage. So, Freddy lets Jason kill Blake and his dad, overlooking the massacre and remarking that he will, "get the glory."
At school the next day, Kia, Lori and Gibb hear about Blake's death and Lori tells everyone about her dream, in front of everyone in the school. After she tells them, she finds that her old boyfriend, Will Rollins has returned (she didn't know that he had been kept in an asylum for years for seeing Lori's father kill her mother).
Later that night, everyone goes to a rave in a corn field. Gibb apparently takes some date rape pills and falls asleep, vulnerable to Freddy. She has a dream where she sees Trey and follows him to a barn, which turns out to be Freddy's Boiler room. A boy comes across Gibb's unconscious body and kisses her, but while this is occurring Jason crashes the rave, killing Gibb (who is still sleeping, stabbing her just before Freddy can kill her himself), the boy, and 8 others. This angers Freddy, seeing that Jason refuses to stop, he yells "She's mine! Mine! Mine!"
Kia, Lori, Will (now escaped from the mental institution), Freeberg, and Linderman escape from Jason. Will, after dropping off everyone but Lori, tells Lori why he was sent to the institution. Seeing Will with Lori, Mr. Campbell rushes up to his daughter and orders her into the house. Will tries to tell Lori that her father works at Westin Hills and he was the one that had Will committed. In a panic, Mr. Campbell grabs Will by the throat, forcing him against the van and yelling "I'm not going to let you endanger my daughter again!" Lori runs into the house and orders her father to tell her the truth. His story doesn't comply and she runs off.
Deputy Scott Stubbs, a rookie police officer tries to inform the Sheriff about Jason, thinking he is a copycat killer, but the sheriff refuses to believe it. Stubbs goes to Lori and the others, and tells them about the killer's entire history. They all conclude that Freddy is the one pulling the strings in order to return again. However, by the time they realize this, the fear has made Freddy strong enough to come back from Hell, although he is angry at Jason's continued presence in 'his' town.
The group goes back to Westin Hills Asylum to find Hypnocil (a dream suppressant) so Freddy cannot kill them. While taking a break to smoke marijuana, Freeberg is possessed by Freddy, who destroys the majority of the Hypnocil. Jason comes into the building and attacks, electrocuting Stubbs and killing him. Freeberg manages to stick Jason with a syringe full of a sleeping tranquilizer , but is Jason hacks him in half before he passes out. Freddy subsequently confronts Jason in the Dream World where Jason, realizing he's been tricked, fights Freddy, only to lose due to his aquaphobia(fear of water) from his drowning as a child.
The teens decide to bring Jason back to Crystal Lake, feeling that the best case scenario is that Jason will win on his home turf and then be content to remain there. Lori is injected with the remaining tranquilizer so she can bring Freddy out of the Dream World. While in the dream, Lori tries to help Jason's childhood self during his drowning, only to be confronted by Freddy (Who has manifested in the dream as one of the counselors who let Jason drown). With Lori, now having captured Freddy's attention, Jason wakes up and escapes the van. The group brings an unconscious Lori into a cabin, where Jason attacks, fatally wounding Linderman by throwing him into a pointed shelf holder on the wall. While Freddy attacks Lori, revealing that he killed her mother as he attempts to rape her, Lori wakes up after the cabin is set on fire and her arm is burned, thus dragging Freddy out of the dream with her.
Jason and Freddy soon face off, with Jason killing Kia as the final fight begins. Freddy starts taking advantage of the construction site and uses it to cause lots of harm to Jason. Unfortunately Freddy is knocked off balance and falls to the ground, entering direct combat, which goes all the way to the docks where Jason slices Freddy repeatedly. But Freddy slices Jason's fingers off, taking his machete and landing several hard slashes on Jason. Lori distracts Freddy and lights the dock on fire giving Jason the opportunity to tear off Freddy's arm. Lori and Will blow up the propane tanks, in an attempt to kill the two. Freddy emerges from the lake with the machete still in his hand. He is about to kill Lori and Will when Jason emerges from the water and stabs Freddy with his own glove. Lori then cuts off Freddy's head with Jason's machete, and both Freddy and Jason fall into the lake, disappearing beneath the surface.
The film ends with Jason walking out of Crystal Lake holding Freddy's decapitated head, which winks to the audience, leaving the outcome of the battle ambiguous, which means Freddy's reign of terror may not be over
|Ken Kirzinger||Jason Voorhees|
|Robert Englund||Freddy Krueger|
|Monica Keena||Lori Campbell|
|Jason Ritter||Will Rollins|
|Kelly Rowland||Kia Waterson|
|Chris Marquette||Charlie Linderman|
|Brendan Fletcher||Mark Davis|
|Lochlyn Munro||Deputy Scott Stubbs|
|Kyle Labine||Bill Freeburg|
|Tom Butler||Dr. Campbell|
|Gary Chalk||Sheriff Williams|
|Paula Shaw||Pamela Voorhees|
Doug Chapman and Glenn Ennis were nominated for the Best Fire Stunt in the Taurus World Stunt Awards 2004 for the double full body burn and wire stunt. Doug Chapman doubled for Robert Englund as Freddy and Glenn Ennis doubled for Jason in the stunt.
The use of Bruce Campbell's Ash Williams character from the Evil Dead franchise had been considered, but this idea was halted when Evil Dead creator and director, Sam Raimi, decided against it. But in the special features of the Evil Dead: Regeneration game, however, Bruce Campbell himself says that the rumors are "partially true" and he would be willing to do the movie should it come about.
A sequel to the story appears as a comic book limited series, Freddy vs. Jason vs. Ash, from Dynamite Entertainment. According to an interview with Englund from March 2006, New Line Cinema had participated in talks with John Carpenter concerning the use of Michael Myers in a sequel.
In November, 2007, Moviehole reported that a sequel is still very much in the works, with New Line Cinema wanting to move forward with a sequel. It also stated that there is still no script, and, because of the WGA strike, the film "won't be coming anytime soon".