Abigail Aldridge's life in Boston was difficult. Her inability to converse with the fluid grace of her societal peers made her an outcast, a spinster sister living with her step-brother and his wife. When she concocts a way to join her uncle at the British outpost of Fort Niagara, she has no idea what dangers lurk at the edge of civilization.

Working at the fort, Koyengquahtah, a Seneca scout for the British army known as Koyen, watches the white women carried ashore from the boat. Soldiers are one thing, but women mean families. Families that plan to stay on Seneca land. It sparks in him a rebellion against the changes threatening to overwhelm his people and their way of life.

When Abigail befriends the sisters of Koyen, their paths cross and their initial distrust of each other grows into a grudging admiration. But violence erupts as two cultures clash, fueled by the Ottawa leader to the west, Pontiac.