Silent Hill  a 2006 horror film directed by Christophe Gans and written by Roger Avary. The story is an adaptation of the Silent Hill series of survival horror games created by Konami. The film, particularly its emotional, religious and aesthetic content as well as its creature design, includes elements from Silent Hill, Silent Hill 2 and Silent Hill 3. The film also includes some music, such as "Wounded Warsong", from the fourth game. A game in the series released after the film, Silent Hill Homecoming, incorporated some elements of the film. The film follows a mother, Rose, who takes her troubled adopted daughter, Sharon, to Silent Hill, the town the girl cries out for while sleepwalking. After being knocked unconscious in a car crash outside the town, Rose awakens to find her daughter missing and the town engulfed in an alternate reality of fog and falling ash. While searching for her daughter, she faces surreal reality shifts and monstrous creatures while uncovering her daughter's connections to the town's dark secrets.

Rose (Radha Mitchell) and her husband Christopher Da Silva (Sean Bean) are concerned about their adopted daughter Sharon (Jodelle Ferland) who has been experiencing extreme nightmares and sleepwalking while muttering the name of a town, "Silent Hill". Desperate for answers, Rose takes Sharon to Silent Hill. As they enter the town, she is chased by a police motorcycle driven by police officer Cybil Bennett (Laurie Holden). A mysterious child appears in the middle of the road, causing Rose to swerve and crash the car, knocking herself unconscious. When she awakens, Sharon is nowhere to be seen, and mist and falling ash blanket the town.

Rose wanders the empty streets of Silent Hill looking for her daughter. Instead, she encounters a series of monstrous creatures that appear after loud sirens wail. Rose also comes across a woman named Dahlia Gillespie (Deborah Kara Unger) who speaks of terrible things done to her own daughter, Alessa, by the townspeople. She claims that Sharon is Alessa. Rose then runs into Cybil, who arrests her. Together they discover that the road leading out of town has disappeared. They pair up to battle the monsters in the town.
Scenes of their search are interspersed with scenes of Christopher's seemingly simultaneous search of the town (which is shown to be abandoned but otherwise normal; no mist, no falling ash), with the reluctant assistance of Officer Thomas Gucci (Kim Coates), who admits to have grown up in Silent Hill. Christopher discovers documents showing the town was abandoned after a coal seam fire 30 years ago, along with a photo of Dahlia's daughter who bears a remarkable resemblance to Sharon. He is told to stop investigating Silent Hill under threat of incarceration. Faced with this, Christopher reluctantly gives up the search and heads home.

Rose and Cybil meet a woman named Anna (Tanya Allen), who leads them to the town church for refuge. The siren blares as they approach the building, and Anna is killed by monsters. In the church, Rose and Cybil discover a religious cult, headed by Christabella (Alice Krige). After convincing Christabella that she wants to find "the demon" so feared by the townspeople, Rose (along with Cybil) is taken to a hospital in the town. Here, Christabella learns of the likeness between Sharon and Alessa and condemns Rose and Cybil as witches. Cybil lets herself become captured and beaten with pipes by the townspeople in order for Rose to escape and descend into the basement of the hospital. There, Rose encounters a badly burned figure - Alessa - in a hospital bed and a mysterious little girl who strongly resembles the missing Sharon.

In a flashback, Rose discovers that Silent Hill has a long history of ritual witch burnings, stemming from the Puritan-like beliefs of the cult. Thirty years prior to the movie, Alessa was heavily stigmatized as an incarnation of sin for having been born out of wedlock and abandoned by her father: her schoolmates bully and humiliate her, with adults making no effort to protect her. Dahlia, Alessa's mother, agrees to Christabella's suggestions that she allow the cult to 'restore the innocence' in Alessa. When not allowed to follow her daughter into the ritual, Dahlia guesses at the cult's ill intentions and runs for the police. Alessa is subjected to a hideous ritual burning: the conditions of her birth are seen as marks of sin, for which they must burn her. However, in the midst of the ritual, the cage by which she is suspended directly above the red hot coals swings, dumping the coal and causing a fire. When Dahlia returns with the police, Alessa is horribly burnt but still alive. Rose learns that the manifestation of Alessa's remaining innocence and goodness took Sharon's likeness and led Rose through her journey. After the flashback, Rose is told that she must aid Alessa in her revenge by granting her entry to the church; she is also told that Christabella will soon find the real Sharon and attempt to burn her as well.

Rose enters the church soon after Cybil has already been burned to death by the townspeople, and Sharon is about to suffer a similar fate. She confronts the townspeople and Christabella with her new knowledge of the truth, attempting to convince the cult that they are in denial of their own fate. Christabella stabs Rose, causing her blood to drip onto the church floor. Alessa rises out of a pit, and proceeds to kill Christabella and the townspeople with long tangles of barbed wire, leaving Dahlia, Rose, and Sharon the only survivors. Rose and Sharon leave Silent Hill and return home. Nevertheless, although Rose and Sharon are in the same room as Christopher (who has also returned home), they cannot see each other.