Eight years ago, at the age of 25, Olivier Rousteing became the artistic director of the French fashion house Balmain and made it one of the most influential of the moment after some difficult years. During the Spring/Summer 2018 parade, he is the star, at the heart of all the attention and forces the admiration of his peers. All his life, he fought to "break his karma" and to be successful, in order to fill the painful emptiness that lies deep inside him... This success has finally only reinforced this terrible loneliness.

Olivier, a little black boy, born under X, adopted by a white Bordeaux family at the age of 1 month, does not know his biological parents. Today, he can no longer live without knowing where he comes from and decides to set out on the trail of his history.

Wonder Boy tells the story of this journey, paved with painful moments and life-saving discoveries, a powerful and inspiring film.