The story picks up several years after the events of The Meg 2: The Trench. Jonas Taylor (Jason Statham), now retired from active exploration and monster-hunting, struggles to find peace. However, his tranquil life is disrupted when a mysterious environmental disaster forces the reopening of the breach to the trench. Scientists uncover evidence suggesting that another apex predator—larger, smarter, and deadlier than the megalodons they’ve faced before—has been unleashed.
As chaos erupts worldwide, with reports of massive sea creatures attacking ships and coastal cities, Jonas is reluctantly pulled back into action. This time, he is joined by a new team of experts, including young prodigy marine biologist Alexa Taylor (his estranged daughter) and maverick tech mogul Declan Walsh, who funds the mission with ulterior motives. Together, they must navigate political intrigue, corporate greed, and personal tensions as they race against time to stop the growing threat.
The titular “Primal Waters” refer to a newly discovered ecosystem beneath the trench, a primordial ocean untouched by time, teeming with creatures thought to be extinct. Among them is the Kronosaurus, an ancient marine reptile capable of challenging even the largest Megs for dominance. These predators are not just wreaking havoc in the ocean—they are driving other dangerous species toward the surface, creating an ecological catastrophe.
The film blends intense action sequences with moments of awe as the team explores the uncharted depths. Expect thrilling underwater chases, battles between colossal predators, and the relentless tension of humanity’s fragile survival against nature’s most ferocious creatures. The climactic showdown, set against a stormy ocean backdrop, pits Jonas and his team against multiple threats, testing their courage and ingenuity.
With its mix of blockbuster spectacle and terrifying aquatic monsters, “MEG 3: Primal Waters” promises to deliver another adrenaline-fueled adventure that will leave audiences on the edge of their seats.