Aster Flynn wants a life of her own.
She's stuck at home taking care of her mentally handicapped sister, Lily, because her mom is always at work, her dad is MIA, and her older sister is too self-centered to care.
But when a cute popular guy seems to be interested in her, Aster hatches a plan to get her workaholic mom and deadbeat dad to be the parents Lily needs so that Aster can have a life of her own.