In a small South Carolina town, wheels are set in motion for horror when a meteorite carrying an alien parasite crashes into the woods. Grant Grant, a wealthy local businessman, stumbles upon the crash site while attempting to salvage his strained marriage with his young wife, Starla. Ensnared by curiosity, Grant gets too close and the parasite takes the opportunity to infect him, planting the seeds for a terrifying transformation. Peculiar behavior and mutations begin to alter Grant’s physical form as the alien presence asserts control, all under the investigation of local sheriff Bill Pardy and Starla.

As the infection spreads, the town's residents are unaware of the impending danger. Pets go missing, then people, and soon Sheriff Pardy discovers grotesque evidence of an escalating epidemic. With the source seemingly connected to the changed Grant, the sheriff must rally the locals, including Starla and the teenaged Kylie, to confront this growing threat. The alien organism's reproductive cycle turns people into grotesque, zombie-like hosts, making the infestation increasingly difficult to stop. Panic and paranoia escalate, trapping the town in a struggle for survival against an expanding, otherworldly menace.