Britney, Whitney, and Courtney have been BFFs their entire lives. Each summer, they spend a few weeks at Whitney's beach house in Florida. Their creepy neighbor, Mark, is always there to buy their booze and make sure they're having a great time. One night, he provides them with three pills called "Red Rubies" and tells them they're the latest and greatest in the world of recreational drugs. Little do they know, these pills are hypnotic and will transform them into Mark's personal play things.