Brit, Faith, Candy and Cotty are best friends anxious to cut loose on their own spring break adventure, but they lack sufficient funds. After holding up a restaurant for quick cash, the girls head to the shore in a stolen car for what they discover is the party of a lifetime. They're thrown in jail - but quickly bailed out by Alien (James Franco), a local rapper, drug pusher and arms dealer who lures them into a criminal underbelly that's as lurid as it is liberating for a close-knit gang of girlfriends who are still figuring out their path.