A desperate scientist's radical attempt to cure his dying daughter unleashes an ancient, predatory potential within humanity, forcing him to confront a shadowy conspiracy and the monstrous consequences of playing God before his creation reshapes the world.

Dr. Marcel Johnston, a brilliant scientist driven by the imminent loss of his terminally ill daughter, Calista, stakes everything on Project Fledge—a revolutionary serum designed to unlock humanity's ultimate potential and conquer disease. But his desperate gamble yields a terrifying miracle: Calista is saved, only to be reborn as a powerful, blood-craving predator, the first of a new kind.

As the Fledge phenomenon inadvertently spreads, transforming ordinary people into super-human hunters, Marcel is plunged into a nightmare of his own making. He must race against time not only to find a cure but also to evade the ruthless Agent Brinks, leader of a shadowy organization that sees his catastrophic success as the blueprint for a terrifying new world order.

Allied with a determined investigator, a man accidentally transformed by the serum, and Calista herself—who struggles with the monster within —Marcel uncovers secrets that stretch back to humanity’s dawn.

Their only hope may lie in the legendary First Bloom, a progenitor essence with the power to either save or shatter what remains of their world. But as ancient forces and modern conspiracies collide, Marcel must decide if the price of undoing his creation is one he, or humanity, can afford to pay.