England, 1937. In the village of Blacknowle on the Dorset coast, fourteen-year-old Mitzy Hatcher has endured a wild and lonely upbringing. Shunned by her neighbours, the arrival of renowned artist Charles Aubrey, along with his exotic mistress and their daughters, is like a breath of fresh air. As Charles's muse, Mitzy develops a deep and abiding bond with the Aubrey household over the course of the following three summers. Gradually, Mitzy begins to perceive a future she had never thought possible, and a powerful love is kindled in her. A love that will grow as she does: from innocence to obsession; from childish infatuation to something far more complex.