"Jaws," has triggered a panic to go to the beach, this time Alexander Aga to bring the new film "Piranha" to tell you, the lake can not go! Lake Victoria, in Arizona, a prehistoric crater after an earthquake, there can be terrorist biological floating on the surface - those belonging to the prehistoric life of piranhas! Picture of the story they have razor - sharp serrated teeth, more social, natural killing machine, killing all mobile biological them instant eating clean ... the weekend of July 4th of each year, in the Lake Victoria region around, the residents would surge from 5,000 to 50,000 people, they are crazy to spend a fun carnival weekend. But today, in addition to the hangover after the binge, they have more need to worry about things. Thousands of piranhas silently came to the voices of the lake, visitors one after another disappeared in the water. Julie Foster (played by Elizabeth Sue) is a local justice of the peace , in order to protect the family and friends are not piranhas swallowed , she must be desperate to eliminate these terrible creatures ...