As the shroud of death lifts from his gruesome face, Jason Voorhees emerges in a macabre yet miraculous resurrection. Rising from the depths of Manhattan's concrete jungle like a demon reborn, his path of terror now leads him to Camp Crystal Lake. Here, he sets his sights on a solitary woman—an undercover FBI agent—who unwittingly plays a role in his rebirth. In a desperate attempt to stop this nightmarish creature, the agent attempts to trap him, unleashing a storm of explosives and gunfire that leaves him a disfigured heap. However, the coroner's office becomes his next destination, where Jason's still-beating heart becomes too tempting for its occupant, allowing his wicked spirit to possess a new vessel.
Once animated again, Jason embarks on a path of bloodshed, beginning with the cold-blooded slaughter of three carefree teenagers at Crystal Lake, their joyful moments shattered by the chilling wrath of their foe. When two police officers arrive at the grisly scene, they too fall victim to Jason's relentless rage. Creighton Duke, a bounty hunter, is hot on Jason's trail, fueled by an unyielding obsession: only those of Jason's bloodline can spell his end, and he is determined to find a family member to ensure this monster's demise.
As Jason's terrifying presence looms over the streets, Diana Kimble, her daughter Jessica, and Stephanie, the innocent newborn daughter of Jessica and Steven Freeman, find themselves engulfed in a deadly struggle. Jason's hunt for reconnection with his half-sister Diana takes a dark turn, leading to catastrophic consequences. Despite Steven's valiant efforts to protect her, Diana tragically falls victim to Jason's fury, and Steven is left framed for her murder—facing the grim reality of life behind bars.
In this moment of despair, an unexpected ally emerges in Creighton Duke, who reveals crucial insights into Jason's methods and his twisted family ties with Jessica. With a newfound sense of purpose, Steven manages a daring escape with a burning desire to reach Jessica before the monster can ensnare her. The tension escalates as he sneaks into the Voorhees household, searching for proof of Jessica’s dark heritage. Shadows loom, though, as TV reporter Robert Campbell exploits Jason's return for sensational headlines, stealing Diana's lifeless body from the morgue to fuel his twisted agenda.
As truths come to light, Jason seizes Campbell as a fresh host, siphoning his dark essence into the unsuspecting journalist. With this horrific exchange, he gains the freedom to hunt Jessica—an act that would solidify his dreadful legacy. But Steven's unwavering determination continually interferes with Jason's plans, igniting a desperate game of cat and mouse that could seal the fates of all involved.
When Jason arrives at his destination, he unleashes a merciless assault on every officer that stands in his way, driven by a singular focus on Jessica. Once more, Steven intervenes to protect her, and in the tumult, Duke manages to break free from his confinement. Sharing a newfound camaraderie, Jessica joins Steven on a perilous quest to rescue Stephanie from the diner, but their mission is thwarted by Jason's ominous arrival. Together, the diner staff attempts to confront the demonic entity, only to become victimized in Jason's brutal rampage.
In the chaos, Jessica once again meets Duke, who provides her with a mystical dagger capable of vanquishing Jason for good. Plans of attack are disrupted when an officer, unaware of the sinister forces at play, becomes possessed by Jason. The Voorhees residence becomes the epicenter of the confrontation. Duke meets a tragic end as Sheriff Landis and Officer Randy arrive to battle Jason alongside Jessica. A succession of tragic events ensues, resulting in Landis’s accidental death, leaving the dagger dropped in a moment of crisis.
Amid the madness, Jason, now inhabiting Randy's form, attempts to seize control of Stephanie again. Yet, Steven intervenes with a machete, seeking to vanquish his dark foe. In a gruesome twist, Jason’s heart transforms into a demonic infant, which emerges from Randy's neck and begins its unsettling journey back to the Voorhees house. Just in time, Steven and Jessica rescue Duke from the basement as the creature finds Diana's lifeless form, enabling Jason to regenerate into his original, horrifying self.
Undeterred, Steven and Jessica chase after the dagger, while Duke keeps Jason occupied long enough for them to succeed. However, the stakes rise as Jason pursues Jessica ferociously. Steven engages in a fierce battle, taking Jason through a window while Jessica retrieves the dagger and stabs it deep into Jason's chest.
As the gathered souls begin to rise from Jason's lifeless body, demonic hands reach from the earth to drag him into the depths of Hell. In a final grasp for Steven, Jason tries to pull him alongside, but Jessica steps in to rescue her lover, leaving him to endure eternal torment. With their nightmare finally over, Steven and Jessica reconcile, walking into a hopeful future with their baby in tow.
But the horror doesn't completely subside. In an eerie epilogue, a dog digging in the dirt uncovers Jason's mask, only to be yanked into Hell by the maniacal laughter of Freddy Krueger, beckoning Jason to join him in eternal damnation.
