A prequel to Tremors (1990), this movie tells us about how the town of Perfection, Nevada became founded and how they defended it against the Graboids with the help of Burt Gummer's ancestor, Hiram.

The now famous Burt Gummer returns to his hometown of Perfection, Nevada for the first time in years, but the deadliest Graboid evolution yet forces him to save the town he swore to protect.