Annabelle DiMeco always lived in the shadows of her older sister, Violet. Since Annabelle was 11 she has lived the life of the older sister while Violet acted as if she didn't age. Annabelle was Violets shoulder to cry on, her own personal advice column. Annabelle has been Violets' own assistant, even breaking up with Violets' boyfriend when she grew tired of them. But when Annabelle meets someone that changes her from Violets' little sister, to Annabelle, she sees that she doesn't always have to live in Violets' shadow. And always be The Little Sister.