On November 5, 1969, three high school football players hatch a dangerous plan to drug and kidnap their prom-night dates. The scheme unfolds with one girl after another, but Mary Banner [Lillith Fields] fights back, sprinting into a storage room. The team captain corners her, delivers a brutal punch, and locks her body inside a trunk, convinced she is dead. She awakens later, trapped and suffocating, and despite her efforts she dies inside that confined space. That night leaves a stain on the town, a chilling secret buried in the school’s memories.
Thirty-five years pass, and the story shifts to a sleepover among Samantha Owens [Kate Mara], Martha [Hailey Evans], and Mindy [Olesya Rulin]. The trio, in a moment of reckless mischief, conjures Bloody Mary, not fully grasping the consequence. By the next morning, the three girls have vanished, only to reappear a day later in an abandoned mill with no memory of how they got there. What could have been a prank quickly deepens into fear as the town’s whispers hint that something dark and intentional may be targeting the children connected to the 1969 incident. Samantha, in particular, feels a creeping dread as she experiences unsettling visions tied to a dead girl’s head wound, suggesting that Mary Banner’s spirit may still be seeking retribution.
As days unfold, a string of deaths echoes urban legends, casting a pall over the school. Roger Dalton [Brandon Sacks] burns within a sunbed, a symbol of the bizarre fates awaiting those connected to the old trauma. Heather Thompson [Audra Lea Keener] suffers a horrifying transformation as spiders erupt from her cheek and her face is torn by shards of a broken mirror. Tom Higgins [Nate Herd] meets a grim end when he is electrocuted while exposing himself to an old electrical fence. The succession of deaths appears random to some, but Samantha and her ally David Owens [Robert Vito] begin to suspect that the events are linked to the unforgotten 1969 case and the people who played a role in Mary Banner’s disappearance.
In her schoolwork and archived notes, Samantha discovers that Mary Banner was never found and is presumed dead, while Grace Taylor [Tina Lifford] remains a living link to the past in town. Grace reveals a troubling theory: Mary’s life force could be exacting revenge on the children of everyone involved in the kidnappings, though she won’t disclose the names. The siblings press on, hoping to warn those who might be in danger and to uncover the truth behind the haunting.
Their investigation leads them to Buck Jacoby [Michael Coe], a football player who is also Heather’s boyfriend. Buck ultimately reveals that his father, Coach Jacoby [Don Shanks], was one of the kidnappers, though he insists he did not harm Mary. This confession complicates the mystery, intertwining family and guilt with the present danger. Soon after, Buck is attacked and murdered by a demonic visage of Mary in a motel, a brutal reminder that the past’s sins still have a grip on the living.
David pushes further into the archives and learns the identity of the fifth person involved in the kidnappings. He rushes home to warn his sister, but Sam disappears once again and is later found suffocated by a hooded figure. Meanwhile, Sam experiences a powerful vision that reveals Mary Banner was still alive when she was locked in the trunk, only to suffocate after waking. The visions also pinpoint the trunk’s location, guiding Sam toward a confrontation that could finally expose the truth behind the long-buried crimes.
Driven by a sense of urgency, Sam seeks out Grace, who reluctantly agrees to drive her to the school. There, Sam uncovers the storage room and the trunk containing Mary’s remains. She is nearly assaulted by the hooded figure but manages to escape with Mary’s remains in hand, heading for a van as danger closes in. Grace, meanwhile, is knocked unconscious, and the two of them drive to the cemetery to lay Mary to rest.
In a tense, climactic turn, Bill Owens [Ed Marinaro], Sam’s stepfather, arrives at the cemetery and helps dig alongside them. The truth comes out in a devastating revelation: Bill was the person who locked Mary in the trunk, and he was the one who killed David. He attempts to shut Sam up by force, but Mary’s ghost intervenes, killing him. Emergency responders arrive, and Sam and Grace are left to process the nightmare they’ve uncovered and the fragile peace they’ve managed to reach, haunted by the town’s past and the spirits that refuse to stay buried.
