Horror sequel in which a species of violent prehistoric piranha continue to terrify a small town. The chaos unleashed in 'Piranha' (2010) by a group of the omnivorous fish, set free by an earthquake that split the floor of a lake, may only have been the beginning. The tests of marine biologist Carl Goodman (Christopher Lloyd) indicate that these fish were only adolescents, suggesting their parents would be even fiercer adversaries. When the piranha make their way into the town's plumbing system, the terror spreads. Soon swimming pools and even the town's brand new waterpark are infested by the bloodthirsty critters. Can the town's residents, marshalled by survivor of the first movie Deputy Fallon (Ving Rhames), find a way to combat their sharp-teethed tormentors?