On a night of torrential rain, a warrior appears near the Colombia River, where the Chinook people thrived before the hydroelectric dams came and changed their entire way of life. He has come to reclaim the river, to return it to its original majesty. Soon after, government employees are found murdered with elaborate harpoons. As the body count grows, Francine Smohalla, a government marine biologist of Chinook and white descent, embarks on her own...