After chomping through the fish population, thousands of starved lampreys begin attacking the citizens of a sleepy lake town, and the community scrambles to stay alive.

An ex-hacker is forced to break into high-level banking institutions, another man must try to penetrate the booby-trapped building to get the young man off the hot seat.

Both dumped by their girlfriends, two best friends seek refuge in the local mall. Eventually, they decide to try and win back their significant others and take care of their respective nemeses.