It is 1950, and nine-year-old Willa's sheltered childhood is about to come to an end when her two new stepbrothers arrive at her family's summer home in British Columbia. When, one afternoon, Patrick lures Willa into a dilapidated rowboat, Willa embarks upon an increasingly damaging relationship with Patrick, one that will forever reconfigure her understanding of herself and her place in a menacing, male-dominated world. When Willa finally realises the danger of her relationship with Patrick, she desperately tries to reverse their dynamic, with devastating results.