After her grandmother's death Sarah Parsons, nearly sixteen, delights in exploring her family's centuries-old Maryland estate with new friend Jackson, but soon she is having vivid visions of her ancestors, one of whom may be a threat to Sarah's autistic brother, Sam.

At her familys Maryland home, in a world where colonists lost the 1776 Insurrection, Sarah Parsons and her friend Jackson share visions of a different existence and, having remembered how things ought to be, plan a daring mission to set them right.