In the frozen reaches of the Bering Sea, where the sun barely cuts through the mist and every wave could spell death, a ruthless crew of treasure hunters is chasing more than just gold—they're digging up nightmares. Donna and Joe Hunter, siblings raised on the sea, operate a high-risk salvaging company alongside their hardened father. They've spent years scouring the wreckage of sunken vessels in search of fortune, battling storms, competitors, and the frigid cold. But nothing prepares them for what lies beneath.
When the crew unearths a mysterious wreck dating back to the early 1800s, something is released. Something alive. At first, they think it’s a fluke—one diver goes missing, another is pulled under in a flash of thrashing water and red foam. But soon, the attacks escalate. Bodies are found torn open. Boats are crushed like toys. The ocean turns red.
The culprit? A terrifying sea beast—a prehistoric predator with armor-like scales, paralyzing venom, and a hunger for flesh. As the attacks increase, the crew is forced into a deadly alliance with marine biologist Megan Arthur, who believes the beast is a remnant of an extinct species that has evolved in isolation under the polar ice. Worse, it's not alone. They’re breeding. With the help of sonar scans and old naval maps, the crew discovers a network of underwater tunnels stretching across the sea floor—an ancient hunting ground that connects a cluster of beast nests. Time is running out. If the creatures breach open waters, they could devastate the ecosystem and coastal communities. But not everyone wants to stop them.
A rival salvager, Lance Bennett, sees profit in the discovery, planning to capture one of the beasts alive and sell it to biotech firms. His interference unleashes chaos, leading to a full-blown massacre on the ice as the beasts strike from below, shattering hulls and dragging men into the abyss. As night falls and a blizzard rolls in, Donna, Joe, and Megan must rig a desperate trap using sonar buoys, explosives, and their own ship as bait. It’s a high-stakes final stand against nature’s most vicious secret. In the end, they face the ultimate choice: save themselves—or stop the monsters for good.
