Heather Mason and her father have been on the run, always one step ahead of dangerous forces that she doesn't fully understand, Now on the eve of her 18th birthday, plagued by horrific nightmares and the disappearance of her father, Heather discovers she's not who she thinks she is. The revelation leads her deeper into a demonic world that threatens to trap her forever.

Rose, a desperate mother takes her adopted daughter, Sharon, to the town of Silent Hill in an attempt to cure her of her ailment. After a violent car crash, Sharon disappears and Rose begins a desperate search to get her back. She descends into the center of the twisted reality of a town's terrible secret. Pursued by grotesquely deformed creatures and townspeople stuck in permanent purgatory, Rose begins to uncover the truth behind the apocalyptic disaster that burned the town 30 years earlier.