Lane and Vivi have had it with Isabelle Hunter's boyfriend, Shawn Littig (a.k.a. Sluttig). He is the only person who can turn their smart, confident best friend into a complete mess. When Shawn Sluttig cheats on and dumps Izzy just months before the prom she's been planning since the ninth grade, Lane and Vivi decide to take action.

With a few quick keystrokes, they create a MySpace page for "Brandon," the perfect guy to get Izzy out of her revolving-door relationship with Shawn. Too bad he's totally fake. Vivi's younger brother, Marshall, who they hire to be the "man" behind the profile, is way too into being Izzy's fake boyfriend. So they turn to cute, prep-school Jonathan to be the face of Brandon. But when Vivi falls for Jonathan, and Sluttig tries to wedge his way back into Izzy's prom picture, the whole plan starts to go south faster than you can say "fake boyfriend."