Growing up on a Canadian dairy farm less than two miles from the American border, fifteen-year-old Natalie Ward knows little of the outside world. But her loving, close-knit family is the envy of young and old alike in the nearby town of Atwood. Natalie adores her three brothers—especially Boyer, the eldest, whom she idolizes. But everything changes one hot July afternoon in 1966 when a long-haired stranger appears at their door—a soft-spoken American, a Vietnam War resister, who will test the family's morals and beliefs, and set in motion catastrophic events that will shatter Natalie's relationships with those she most dearly loves.