Marilla Cuthbert is 13 years old when her beloved mother dies in childbirth, and she suddenly must bear the responsibilities of a farm wife. Her one connection to the wider world is Aunt Elizabeth "Izzy" Johnson, her mother’s sister, who managed to escape to the bustling city of St. Catharines. Aunt Izzy’s talent as a seamstress has allowed her to build a thriving business and make her own way in the world. Emboldened by her aunt, Marilla dares to venture beyond the safety of Green Gables and discovers new friends and new opportunities. However, she soon finds herself caught up in the dangerous work of politics, and abolition --- jeopardizing all she cherishes, including her bond with her dearest John Blythe.