After more than 20 years, Sue returns from Switzerland to her home country Egypt because her mother Fairouz is in a hospital bed. Sue ran away from the eccentric aristocrat as a young adult. Now she feels compelled to meet her again.

Chady and David work on cargo ships on Lake Geneva. They are both foreigners in Switzerland. On the oscillating waters of the lake, the young men, who are haunted by the memories of their home countries, share secrets, memories and the same feeling of being uprooted. A strange intimacy forms between the two men.

Three women, three generations, two secrets. In the early 1970s, a bomb exploded on board the Swissair flight 330 to Tel Aviv. Isabelle's husband also died. The young, very pregnant widow feared that her lover, the Palestinian activist Djibril, might be entangled in it ... Now, 47 years later, Isabelle finds out that her granddaughter Anaïs has converted to Islam. But why does the young student keep her new faith secret from the family? Anaïs's mother, Léa, immediately rings the alarm.