She may be a tough-as-nails, street-smart private investigator, but when total tomboy Molly (MILEY CYRUS) is drafted by the FBI to go undercover within a college sorority, she finds that she's way out of her class among a sisterhood of snooty, high maintenance, materialistic college girls. However, Molly accepts the pledge to protect one of the society debs, who holds key information that will be used at a trial where her father is about to turn State's evidence and testify against the mob. Despite being the opposite of her new "sisters," Molly has to suck it up and bond with obnoxious upper crust trust fund babies if she's going to succeed in her top-secret mission.