In a sophisticated research laboratory, a brilliant yet somewhat isolated scientist, Seth Brundle, is on the verge of revolutionizing the way humanity perceives teleportation. After many nights of work and a few too many drinks, he decides to test his new invention, a device that could change the course of science. However, his experiment takes an unexpected turn when a small fly sneaks into the machine, merging its DNA with Seth's. At first, everything seems fine, and Seth experiences a significant boost in his vitality and physical abilities. But soon, the effects of the teleportation begin to manifest in a terrifying way.
As the days go by, Seth physically and mentally transforms into a repulsive creature: a hybrid of human and insect. His appearance deteriorates and his mental health collapses, trapping him in a cycle of despair and violence. His relationship with the journalist Veronica, who fell in love with Seth before his transformation, becomes complicated as she grapples with the horror of what he is becoming.
The story evolves into a tragic tale about ambition, identity, and the consequences of playing God. As suffering and terror unleash, both Seth and Veronica face heart-wrenching decisions. The film is a disturbing blend of science fiction and horror that leaves viewers questioning the limits of humanity and nature itself.