Each year the population of sleepy Lake Victoria, Arizona explodes from 5,000 to 50,000 residents for the annual Spring Break celebration. But then, an earthquake opens an underwater chasm, releasing an enormous swarm of ancient Piranha that have been dormant for thousands of years, now with a taste for human flesh. This year, there's something more to worry about than the usual hangovers and complaints from locals, a new type of terror is about to be cut loose on Lake Victoria.

Ricky, a perverted ice cream shop owner, wants to boost declining sales by renaming his shop to "Scoopettes", and markets it as an adult ice cream store. This sleepy town's ice cream store has started serving a little more than just your typical flavors, dishing out gobs of Virgin Vanilla and Busty Buttercrunch, but wait - what's that? Eeeeek! There's an eyeball staring up from the Cherry Vanilla! The five girls, whom Ricky calls "The Scoopettes", are so hot the ice cream will never stay hard! But everyone leaves with a smile and much, much more! It becomes apparent that someone doesn't like the success that Ricky is experiencing when one of the Scoopettes is found murdered in the freezer. The killing of the girls continues one at a time and the customers find a little extra in their ice scream!