A hideous death lurked unseen in the river...
About
When a skip-tracing investigator arrives at a remote, wooded area in search of two missing teenagers, she unwittingly stumbles upon a long-abandoned military testing facility. While exploring the crumbling site, she inadvertently drains a murky pool into the local river system, unaware that the water contains a genetically altered strain of ravenous piranhas. As the fish head downstream toward the bustling Lost River Lake resort, the oblivious guests prepare for the grand opening of an ambitious new summer attraction. With hundreds of vacationers filling the water for a holiday celebration, the unsuspecting swimmers become the primary target for a swarm of lethal predators. The local authorities are left to grapple with the terrifying reality of the situation as the idyllic summer retreat rapidly transforms into a desperate struggle for survival, forcing the residents to confront a menace that turns the very water they rely on into a deadly trap.