In the case of Savanna and Gracie, friendship isn't based on reason, but on the notion that opposites attract. Savanna is a head-turning, attention-seeking, accessorized one of "Those Girls, " while Gracie's love of old movies and commitment to protecting the environment put her into the "everyone else" category. It seems as if nothing could come between them until Savanna's lies and dependence on Gracie as a false alibi start to take a toll on their relationship. When Savanna gets between Gracie and her crush, the line separating best friend from worst friend is crossed.