Picking up after the chaotic events of Lake Victoria in Piranha 3D , the prehistoric, blood-thirsty school of piranhas finds a new way to terrorize humans. This time, the razor-toothed fish infiltrate the plumbing systems of a newly inaugurated adult waterpark called "The Big Wet".
The film is currently available to stream for free (with ads) on Tubi. Amazon Prime Video: Available for rent or purchase. Google Play Movies & TV: Available to purchase.
The plot of Piranha 3DD takes the carnivorous prehistoric fish from the polluted Lake Victoria (the setting of the first film) and brings them into a new environment: a water park.