In a high-tech laboratory, the legacy of a failed experiment lingers. The story begins with young Philippe Delambre, who seeks to resurrect the vision of his father, the infamous scientist André Delambre, known for having merged with a fly in a botched experiment. Although his father paid a high price for his ambition, Philippe is determined to prove that he can perfect the formula and clear the family name.
However, as he delves deeper into his research, Philippe discovers that his father's work is fraught with terrible secrets and dangers. Ignoring the warnings from his girlfriend and friends, he perseveres, convinced that science can conquer nature. But after conducting a successful initial experiment, Philippe triggers an unexpected accident, transporting his consciousness into a hybrid body with a dark fate.
Unleashing a series of horrifying events, Philippe becomes a monster struggling to maintain his humanity while facing a ravenous thirst for revenge that threatens those around him. The measures he takes to regain control become increasingly desperate, and his life transforms into a race against time to reverse the effects of his creation. Horror ensues as the line between genius and madness blurs, leading to a shocking climax that challenges the limits of science and the power of fear.