Her sister Susan's arrival in Beverly Hills further complicates Anna's life, with Ben still mooning over her, Adam wanting more than friendship, an internship in her father's girlfriend's new company, and a class project that brings her in close contact with Sam, Cassie, and Dee.

As eighth-graders Mackenzie Little-Armstrong and her nemesis Ruby vie to be Social Chair of Bel-Air Middle School, Ruby employs a secret weapon, but Mac is determined to gain fame by being as good a talent agent as her mother.