Because My Nanny Told Me So unfolds in the sleepy suburbs of Atlanta, GA. The story follows the Smith family, which consists of the mother, Amelia, her husband, Cole, and their four children, Anna Grace, Fiske, Mason, and Adian. Due to a tragic twist of fate, Amelia dies and her best friend, Isabel, who is the children's nanny, decides to raise the children as her own. Isabel tries to make things better for the kids by doing fun things that their mother would do with them in the past. The family grows and grief turns to acceptance and joyous remembrance at every loving utterance of "Because My Nanny Told Me So "