Geologist Tom Bains Sam Hennings is involuntarily admitted to a hospital after rambling about a town called Comet Valley. An FBI agent named Agent Weems Michael Gregory arrives and insists on hearing his story from the beginning, which unfolds largely in flashback.
Tom travels to his rural hometown of Comet Valley—a remote community currently cut off by bridge repairs—to examine a locally discovered meteorite and deliver a geology talk to the Fireball Club. The setting feels deliberate and claustrophobic, with every road and ridge seeming to trap the town as if waiting for something to emerge from the earth.
While staying at his former girlfriend Heidi Tucker Andrea Roth's bed‑and‑breakfast, he reconnects with her and meets her niece Kim Holly Fields, Deputy Sheriff Brad Yates Dane Witherspoon, and local orchard owner Ed Busta David Dunard. The mix of old ties and small‑town routines creates a sense of familiarity that slowly dissolves as oddities mount.
Strange occurrences begin when Kim becomes convinced that their housekeeper, Mrs. Santiago Anne Betancourt, is not human, and townsfolk start acting unnaturally pale and robotic. The unease deepens as the community slides from routine to something unsettling and almost clinical in its precision. The creeping paranoia turns communal life into a pressure chamber where every glance and gesture feels calculated.
In Ed’s orchard, alien plant pods burst open and release white goo and seed‑like spores that transform humans into emotionless duplicates—seedpeople—used to spread the infestation further. The transformation is chilling not only in its physical horror but in how it erodes personal agency, turning neighbors into anonymous, compliant extensions of an outside presence.
Tom’s investigation, aided by Doc Roller Bernard Kates, an eccentric local physician who wears UV bulbs to protect himself, leads to the discovery that the meteorites contain an organic component akin to seed pods, planting latent alien spores in the area decades earlier. The revelation reframes the town’s oddities as a long‑gestating invasion, one seeded long before any resident suspected a threat from space.
As seedpeople emerge in increasing numbers, Tom, Heidi, Kim, and Doc Race against time to expose the invasion and prevent it from spreading beyond Comet Valley. The group navigates a landscape where familiar faces become potential threats, and the line between scientist’s curiosity and frightening reality blurs with each new encounter.
The climax unfolds amid the orchard’s alien vegetation, culminating in a tense confrontation with the source of the seed pods. The confrontation blends peril, science, and sacrifice as the community fights to hold onto what makes it human in the face of an invasive, otherworldly force.
In the aftermath, while the immediate danger appears resolved, the film leaves open the possibility that remnants of the alien infestation may persist. The finale lingers on the idea that some seeds—literal and metaphorical—remain dormant, waiting for a moment to sprout again, reminding viewers that not all threats are fully gone even when the last battle seems won.
