The film tells the story of a single mother named Kara (Elizabeth Roberts) who moves to a quiet countryside with her two children for a job opportunity she can't afford to turn down. The family moves into their humble new guesthouse, where Kara begins her work as a private nurse for Walter (Bruce Davison), a man suffering from multiple sclerosis and an appraiser of rare antiquities with a secretive past.
Kara's teenage son Jesse (Arman Darbo) is unhappy about this most of all. Losing his friends and moving to the middle of nowhere hasn't made his job of looking after his little sister Cambria (Chloe Perrin) any easier. Doom precedes them, as Akiba (Treva Etienne) a shady international associate of Walter's brings with him a mysterious relic of ancient origin.
Kara encounters a local sheriff played by Denise Crosby. All too quickly, they discover that the relic contains more than just legends. Inside, waits a terrifying creature born of ancient darkness and pure instinct...a pre-historic cave spider unlike the modern world has ever seen.
