In a small town in Florida, the tranquil life is interrupted by a series of mysterious disappearances in the nearby swamps. As the residents try to unravel the mystery, a group of scientists investigates the local fauna and discovers that a breed of giant leeches, a byproduct of a failed radiation experiment, has emerged from their habitat. These creatures, with the ability to camouflage themselves and attack their victims from the shadows, begin to instill terror among the locals.
As the attacks multiply, the situation becomes untenable. A couple of local youths, determined to save their community, dare to venture into the dangerous swamp in search of answers. However, they soon find themselves caught in a spiral of madness, confronting not only the monstrous creatures but also their own fears and personal tensions. The discovery of the giant leeches instills a new sense of urgency: they must act quickly before the town becomes a banquet for these voracious predators.
With a mix of suspense and a touch of youthful romance, this science fiction story delves into humanity's primal fears of the unknown. Amidst the struggle for survival and romantic intrigues, the characters will face not only the leeches but also their own internal demons, as the clock keeps ticking.