Years after the death of her mother, Mareika Doerksen moves through her adolescence with feelings of loss, confusion, and isolation as she seems somewhere between not being a child and not being a complete woman. Her father, a Mennonite only ethnically and socially, and a long-time atheist, has always been distant but pragmatic as he prepared her for the day he expects her to abandon their homestead on the Canadian Prairies for an education once impossible for women of their time. They move day to day avoiding the tragedies, traumas, and social expectations they rebel against in their Mennonite community during the infancy of Canada. But with the looming arrival of the 1910 Halley's Comet, so too comes a handsome, charismatic Doomsday preacher. He captivates Mareika as he offers her solace and his ear. Meanwhile the local Bishop with a troubling and violent past sewn to the Doerksens, too, becomes obsessed with the maturing Mareika and sets out with the goal of saving her from the chiliast stranger and her atheist father.