Still hiding in the Moroccan desert thanks to the DGSE, which staged their funerals, Vincent and Alban had to cut ties with their former lives and families. Suddenly, when Alban, who has found happiness in this new life, learns that his mother is ill, he panics. Vincent, who dreams of seeing Louise again, convinces him that they must return. But the journey promises to be perilous. Gang warfare, chemical weapons trafficking, and the return of a Russian agent thirsty for revenge... Nothing will be spared our two heroes.