An old woman is seen washing blood-stained clothes in a tub, and a visiting Mirosław Zbrojewicz postman who arrives at the house notices noises drifting from the cellar. Convinced someone is trapped, he pries open the entrance, but is dragged into darkness by an unseen force and vanishes.
Thirty years later, a phone-free camp for teenagers opens, with phones surrendered to the camp leaders. The teens are sorted into groups, and the main group ends up with the camp’s counselor, Gabriela Muskała Iza, who leads them on a three‑day trek into the woods. The atmosphere is tense but orderly as the camp tries to keep things light and safe in a setting that feels almost timeless.
As they press on, they stumble upon a dead, rotting deer. Iza notes that the kill doesn’t look like it was done by a predator and urges everyone to keep moving. The group finds a lakeside camp for the night, and that darkness brings its own sounds from the forest. Iza spots a fox and, for a moment, the group relaxes, though a sense of unease lingers.
That night, Daniel Czajka Sebastian Dela is at the lake with Aniela, and after their encounter, Aniela returns to her tent, unaware that a hulking figure lurks nearby. Daniel is later found dead, his body pounded against a tree by an unseen assailant. In the morning, the teens search for Daniel, and Iza breaks a crucial rule of horror by ignoring the group’s usual caution, prompting a split: some go with the coach to look for him, while others wait by the lake and hope for a sign.
The group retraces their steps to the house seen at the film’s opening and discovers Daniel’s mangled body in the basement. As they try to flee, the killer enters the house, forcing them to hide in the basement. Zosia, Julia Wieniawa as Zosia Wolska, and Julek Rosiejka, played by Michał Lupa, manage to escape through a cellar window, but Iza stays behind, determined to recover Daniel’s phone to call for help, and she is killed in the process.
By the lake, Aniela and Bartek Sokołowski, Stanisław Cywka, share a moment before Aniela is slain by a metal bar driven through her back and mouth. Bartek flees toward a nearby church, hoping for sanctuary and aid, but the priest—Piotr Cyrwus—is knocked unconscious, gagged, and tied to a chair. When the killer arrives at the church, the priest is killed, and Bartek’s attempt at seeking help ends in tragedy as the killer hauls him away, leaving the church in shock.
Zosia and Julek flee to an old man’s house, where they learn the story of twins who once lived there with their mother. The twins discover a meteorite that crashes nearby, and a dark fluid seeping from the rock enters their bodies, turning them into vicious carnivores. The mother, driven to fear and despair, locks the twins away in the basement; she eventually dies, and the twins seize their chance to escape.
Back with the teens, the group regroups and makes a desperate attempt to recover Daniel’s phone from the basement. Julek distracts the killer with noise while Zosia seizes the phone, but the killer’s twin blocks her path. Julek is stabbed, and his tongue is ripped from his mouth as Zosia is knocked unconscious.
When Zosia awakens, she discovers Julek in agony with a blade in his abdomen. The phone is dead, and desperation drives her to kill Julek to end his pain. She frees herself, grabs a machete, and climbs upstairs, where the killer’s twin lies sleeping. She ends him with a decisive strike and flees into the night.
A police officer, Olaf Lubaszenko as a Policeman, pulls up near the forest road and offers to drive Zosia back to civilization. Their uneasy ride ends in tragedy when they run over one of the twins and the officer is killed in the face of the killer’s relentless pursuit. Zosia is left trapped in the back seat, but she shatters a window and takes control of the car, driving away after repeatedly running over the killer and escaping into the night.
In the film’s closing moments, the killer is shown still alive, and his twin wakes up in his own bed, mirroring the survivor’s gaze toward the distant flash of police lights. The story lingers in the mind as the forest’s secrets seem to outlive every attempt to contain them, leaving a sense of unease about what hunted who—and who might still be lurking in the shadows. The camera’s final glare lingers on the quiet road, promising that danger, however hidden, may return.
