Piranha 3D is a horror-comedy film set in the fictional Lake Victoria during its annual spring break festivities. When a sudden underwater earthquake opens a fissure beneath the lake, it releases prehistoric piranhas into the water. The vicious, flesh-eating fish are ravenous and quickly make their presence known, attacking an unsuspecting fisherman and setting the stage for chaos.
Local sheriff Julie Forester, along with her deputy, investigates the gruesome discoveries in the lake. As the spring break crowd grows, Julie warns everyone of the potential danger. Meanwhile, her son, Jake, gets caught up with a group of partygoers filming an adult video on a luxury boat. His siblings, Laura and Zane, accidentally venture into dangerous waters, forcing Jake to go after them.
The situation escalates as the piranhas begin attacking the partygoers, turning the lively event into a bloodbath. Sheriff Forester, with the help of seismologist Novak, works tirelessly to evacuate the area and rescue survivors. The film features intense, gory action as the piranhas wreak havoc on the lake, claiming numerous victims in their feeding frenzy.
In the climax, Julie, Jake, and Novak devise a daring plan to save Jakeβs siblings and escape the piranha-infested waters. While they manage to rescue the children, they discover a chilling twist: the piranhas theyβve encountered are juveniles, and larger, deadlier adults may still be lurking. Piranha 3D delivers a mix of gruesome horror, campy humor, and thrilling action, making it a memorable addition to the creature-feature genre.