In the aftermath of global war, the Globus Corporation has its hands in governments around the world. On the isolated island of Delta-5 Caprona, it begins a high-stakes excavation—recovering fragments of a meteorite that crashed 100 million years ago. Inside: a mineral with limitless power.

A bizarre series of incidents take place on a usually tranquil lake. Boats are found ravaged, a body torn in two, other people are missing and an injured victim cries of a monster. Chief of Police Morgan Sydney must face the reality that a huge monster is lurking in the lake. With bulletproof scales, territorial aggression, and an insatiable appetite, the beast causes mayhem in the peaceful town.

Rick Napier is a fisherman struggling to make ends meet. The situation is made even worse when a local fishing vessel mysteriously disappears, along with a Coast Guard diver sent to search for the wreckage. As events unfold, he confronts the horrible reality of a top secret government experiment gone haywire, resulting in a hybrid creature of massive proportions. Escaped from captivity in a high tech facility in the Atlantic, it seeks to fill an insatiable appetite.

Dr. Hugh Meyer believed he had created the ultimate miracle. Using the DNA of ancient creatures preserved in the Arctic, he had genetically engineered one of the most remarkable species of sea creature to ever exist: the Serpent Eel. Believed to possess the cure for countless diseases, the creature holds great promise for the medical community. All goes awry when the beast escapes containment. With a rapid growth rate and remarkable physical evolution, the beast travels to the coastal town of Spiral Bay. There, the creature designed to save human life instead starts taking it.

A series of violent shark attacks off the shores of northern California draw the attention of pessimistic Detective Luke Jansen. Despite reports of shark sightings, the injuries are more reminiscent of a chainsaw-wielding maniac. Things get stranger when marine biologist Elise Sheldon encounters the creature. Exhausted and traumatized, her claims that the beast is a Helicoprion are dismissed. With little help from the police department, Luke and Elise form an unlikely alliance that puts them face-to-face with a violent man-eating shark, and its terrifying reason for existing.