Decades after his legendary survival against the subterranean monsters known as Graboids, Burt Gummer is living as a minor internet celebrity, hosting a survivalist reality show. Burt's comfortable, albeit paranoid, routine shatters when a slick, ambitious young tech-entrepreneur named Travis Welker arrives at his Nevada compound. Travis reveals he is Burt’s illegitimate son, conceived during a past romantic encounter, and offers Burt a massive payday to star in a new global wildlife hunting show. Despite his initial skepticism and gruff reluctance, Burt agrees, needing the financial backing to fund his massive arsenal and secure his retirement.Their destination is the remote, sun-baked savannah of South Africa, hired by the South African Wildlife Ministry to hunt down a particularly aggressive, fast-moving threat. Upon arrival, Burt and Travis meet their safari guide, Den, and quickly realize the local fauna is being decimated by a terrifying evolutionary leap. The creatures are no longer just standard Graboids; they are deadlier variants, including agile, bipedal forms known as Ass-Blasters, and a massive, predatory matriarch known as the Queen. Worse still, the locals have been breeding these monsters, leading to a catastrophic ecological disaster that threatens the entire region.Trapped in a makeshift
research station surrounded by hordes of the ravenous beasts, Burt’s tactical genius is put to the ultimate test. Armed with improvised weaponry, limited ammunition, and an array of heavy artillery scavenged from local military caches, Burt and Travis must put aside their tense, newly formed familial dynamics to survive. As the night wears on, the duo fights desperately against waves of burrowing horrors, utilizing explosives, flamethrowers, and sheer grit.During the relentless carnage, Travis proves his mettle, saving Burt’s life multiple times and earning the hardened survivalist's hard-nosed respect. In the climactic showdown, Burt manages to orchestrate a brilliant trap for the Queen Graboid, destroying the apex predator with a devastating, high-explosive payload. Having survived
the nightmare, Burt and Travis forge a genuine father-son bond, deciding to officially team up and take their monster-hunting enterprise global. The film concludes with the newly united duo looking out over the African landscape, ready to face whatever twisted monstrosities evolution has cooked up next, proving that Burt Gummer’s war on the subterranean menace is far from over.