A 14-year-old boy named Duncan Mudge lives on a farm, trying to come to terms with his ​​mother's death. However, he does it in a very unusual way: he imitates the sound of her voice, her facial expressions, gestures, wears her clothes, even a fur coat, and even sleeps in it. Edgar, his heartbroken 60-year-old father, does not understand his son. Why can not Duncan grieve like everyone else? What tendencies appear in him? The father tries to get him back to normal to make him engage in farm and followed in his footsteps. Meanwhile, his teenage neighbors do not understand and humiliate him. But gradually between Duncan and one of his mockers - a teen named Perry - a close relationship begins to occur.