When disc jockey Grant Mazzy reports to his basement radio station in the Canadian town of Pontypool, he thinks it's just another day at work. But when he hears reports of a virus that turns people into zombies, Mazzy barricades himself in the radio booth and tries to figure out a way to warn his listeners about the virus and its unlikely mode of transmission.

When her beloved grandfather Charlie suddenly falls ill, twelve year-old Casey finds herself making some life or death decisions—and learning to live with the consequences.

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.