Twelve-year-old Annie is thrilled to finally have the chance to meet her estranged grandmother. When Annie and her mother arrive at her grandmother’s estate, however, Annie is devastated to learn that her grandmother is a bitter and mean old woman. When Annie wakes up the next
morning in her grandmother’s house, she is surprised to discover that she is not alone; there is another girl in the room with her. She soon realizes that she has traveled back in time to 1937, and that the strange girl is Molly, her grandmother at twelve years of age. Due to illness, Molly has been kept up in her bedroom for much of her life and has been deprived of many life experiences. But with a little push from Annie, Molly is exposed to a whole new world. The girls set off on several adventures throughout the city of Baltimore, developing a friendship that has a profound effect on both of their futures.