Rose Da Silva and her husband Christopher are deeply disturbed by their adopted daughter Sharon's constant sleepwalking and nightmares about Silent Hill, a town that was abandoned 30 years ago due to a massive coal seam fire. Against Christopher's wishes, Rose takes Sharon on a trip to Silent Hill to find answers. Her erratic behaviour concerns police officer Cybil Bennett. Rose flees from Cybil, but when a girl steps out into the road, Rose crashes and blacks out. Waking up some time later, Rose finds herself in the foggy dimension of Silent Hill and realizes that Sharon is missing. Searching the town for Sharon, Rose pursues the same girl she encountered prior to the crash, who turns out to resemble Sharon in appearance. At various points, the town transitions into a nightmarish dimension inhabited by inhuman monsters, including the fearsome Pyramid Head. Rose survives the transitions and consequently learns of the existence of Alessa Gillespie, a young girl burnt by the Brethren, the town's fanatical cult. Her mother Dahlia wanders the streets as an outcast, guilty for her negligence that led to Alessa's doom. Rose is later joined by Cybil, also trapped in the foggy dimension of the town due to a giant fracture isolating Silent Hill. Meanwhile, in the real world, Christopher searches the abandoned town with policeman Thomas Gucci, but their search is in vain. Upon finding a photo of Alessa, Christopher goes to the orphanage where Sharon was adopted. Gucci appears, revealing he lived in Silent Hill and saved Alessa from the fire. He encourages Christopher to end his futile search and go home.