In the tiny community of Lost Bridge Island, a homeless man bursts in on the middle of Sunday service, warning the residents that the purest form of evil has been unleashed and, until they identify and eliminate it, they will fall one by one. Hours later, a violent car accident kills two of the congegation and injures two others. Soon, the island begins to experience bizarre and horrific happenings. Weather conditions change. Radios and cell phones stop working. Residents receive visits from the dead. Then, the Oak Shadows Bridge collapses and cuts them off from the rest of the world. As Satan's reign takes control, each person must fight for their own survival.