Mysterious piranha attacks unfold around a sunken US supply ship off a Caribbean island resort, where a series of gruesome events unfold after a scuba-diving trip turns deadly. As a mother investigates her son's companion's death, she uncovers a shocking discovery: the piranhas have evolved to fly, and a hotel's reckless disregard for the danger puts everyone in peril.

Piranha II: The Spawning
At a tropical resort, a series of deadly incidents unfolds, prompting a trio of unlikely allies to team up and uncover the truth. Their investigation leads them to a sunken ship, where they discover a frightening infestation of toxic and vicious piranhas.