In a melting Alaskan glacier, an ancient predator is released from its icy prison due to global warming. The terrifying creature, a prehistoric hybrid of dinosaur and shark, swims southward, wreaking havoc along the way. It eventually reaches the coast of Mexico, where a local fisherman, Trace, makes the grisly discovery of the creature's brutal attacks. While beachgoers and tourists enjoy the lively oceanfront, they remain unaware of the impending danger lurking beneath the waves. Trace, increasingly alarmed by the mounting number of dead marine animals washing ashore, teams up with marine biologist Carol to identify and stop the beast.

As the monstrous predator continues its assault, the community is thrown into chaos. Official efforts to contain the situation are thwarted by skepticism and slow bureaucratic responses, leaving Trace and Carol to rally a group of locals to take action. They set out to hunt the creature before it claims more lives. Their fight against time and the prehistoric menace becomes more desperate with each deadly encounter. The group faces numerous obstacles and personal sacrifices as they navigate the treacherous waters and grapple with the ferocious creature, risking everything to save their town from an ancient horror reborn.