The year is 1938 and a family in the small South Carolina town of Beaufort faces serious adversity. After the birth of her long awaited son, Mary Banks dives into a dark postpartum period, throwing her into a deep depression. Thinking that her sister, Rose, is offering her a helping hand, Mary leaves her family and goes to Boston in search of a medical cure, not to be heard from again.

Where is Mary Banks? What has Rose done with the much loved mother and wife of the Banks family? Finally, Mary's 15-year-old daughter, Estelle can wait no longer. She gathers her wits and her courage and without a word, runs off to heroically rescue her beloved mother in far away Boston. This is where the adventure begins......