In the quiet town of Alpine Lake Tahoe lakeside, Clint Gray is a dealer of exotic black market. With police on his trail, Clint accidentally releases a shark in the lake. Lethal animal is pregnant and swim freely in the lake. Five years later, Clint is paroled. Coincidence or not, the animal released into the lake begins to make its presence felt. Swimmers start disappearing one by one. Police Officer Hernandez, who adopted daughter of Clint, refused to let him visit his daughter. Biologist Peter arrives in the area to learn more about the shark attack. Things soon degenerate.