Mona, a young Parisienne, learns that her real father is Moroccan. The only traces of his existence are a name, Mahmoud Saber, a black-and-white photo and a love letter to her mother. She decides to set off for Morocco in search of this man, whose existence turns out to be enigmatic, on a journey that takes her from Casablanca to Essaouira and turns into a journey of discovery.