Astrid, the wife of a renowned lawyer, has been silenced for 25 years. Her family's equilibrium suddenly collapses when her children start looking for justice.

They come from everywhere, they now have one thing in common, they belong to the elite of the French army : the Foreign Legion, their new family. My Legionnaire tells their stories : those couples who build themselves in hostile territory, those men's who fight for France, those women's who fight to keep their love alive.

Carlos is an implacable man in contract negotiations. He lives and works in Brussels. His talent and the contacts of his mother, a senior United Nations official, are about to take him to the pinnacle : a seven-figure salary and a position in New York with Susan, his wife. For this promotion, he must first go to Africa and use his good offices to resolve a kidnapping that compromises the signing of a large contract. Although he isn't an expert in this type of conflict, he is nevertheless best placed : the leader of the terrorists is a former friend, from the time when Carlos worked as a cooperating in the country.

While solar flares affect the earth, Hugo, a teenager adopted by a well-off couple, sees a woman appear, looking like his biological mother who had disappeared ten years earlier. A fantasized, marginal, excessive figure, who will upset the foundations of his personality.

Eva, a mysterious doctor, is searching for an answer to her urgent dilemma, as she unravels the secrets of 18th century physician Dr. Anmuth and his patients through studying his Book of Vision. Her supervisor Henry gets more involved in her life than he expected and is forced to confront his own nature, as Eva faces the biggest decision of her life.

Sybille has persuaded her teenage son Samuel to come on a trek in the hope of finding a new rapport - but challenges await, as much from their own personalities as from the arduous landscape.

When a sudden tragedy uproots the lives of two women and their families, they begin to question the relationships they once held so dear, in this psychological thriller.