When the state of Maine threatens to shut down their island's one-room schoolhouse because of dwindling enrollment, eleven-year-old Tess, a strong believer in luck, and her family take in a trumpet-playing foster child, to increase the school's population.

For two years, twelve-year-old Hazel has coped with her Mum's accidental death by overprotecting her sister and Mama, but when Mama reconnects with her first love, roles begin to shift.

When twelve-year-old Ellie and her family lose livelihood and move to a mountain cabin in 1934, she quickly learns to be an outdoors woman and, when needed, a healer.

When her blind dog slips his collar, twelve-year old Lily meets Salma Santiago, a young Hispanic girl whose migrant family are in Maine for the blueberry-picking season, and, based partly on their mutual love of dogs, the two forge a friendship while painting bee boxes for Lily's grandfather--but as the Blueberry Queen pageant approaches Lily and Selma are confronted with some of the hard truths of prejudice and migrant life.

In 1930 Abby Nichols is an eight-year-old girl growing up in Maine, but as the Depression deepens, and her mother dies, the responsibility of taking care of her family falls to her, and she has to put her dreams of going to college and becoming a writer on hold.