Tall, awkward, and lonely, Frankie Addams has a vivid imagination but no friends. She spends most of her time in the kitchen, pouring out her heart to Berenice, the gentle family cook and housekeeper. Frankie's jealousy of her brother's impending marriage, and her curious belief that she must accompany him and his bride on their honeymoon in order to belong, drives her to strange measures. She devises a desperate plan, reinventing herself as the seemingly sophisticated F. Jasmine, a gawky beauty in a pink dress who looks closer to 16 than 12. But she's ill prepared for what follows from this troubling game of make-believe.