A sprawling drama centered on five key days in a family's life.

Yann Kerbec is a flight instructor: he evaluates pilots’ abilities under extreme conditions on flight simulators. But Yann has a big problem: he is so airsick since he was born in a plane, that he couldn’t even follow the love of his life when she moved to Australia. Yann is now thirty years old and remembers with both nostalgia and humour the numerous love stories he spoiled because of his phobia. Will he finally accept to become a grown up or will he keep making plans in the air?

Lucretia is a killer for hire. Specialised in poisoning and passionate about opera, she'll have to fulfill a difficult contract in the heart of the Swiss alps. Posing as a singer, Lucretia will have to appear on the scene of the higly exclusive Festival d'Ermeux and try to kill one of her partners: British bariton Alexander Child. Having recently acquired a Scottish distillery, he remains the only obstacle to a strategic pipeline project with considerable economic stakes; having recently won a tough legal battle against British Oil, their last resort is to eliminate him. Complicating everything is Rico, sent by the French contra-espionage, who tries to infiltrate the orchestra and stop the plot against Alexander Child.

Police Commander Louise Chaland is investigating the murder of a controversial sculptor with the help of her son Sylvain, who has become a priest. The body was discovered alongside one of his works, which has been daubed with Latin inscriptions. They soon establish a link with the disappearance of a relic of Saint Martin, the patron saint of the city of Tours. Their investigation leads them to a shelter for the needy, run by François Delcourt and his daughter, who was in love with the murdered artist. Clues start to reveal the disturbing fascination some inhabitants of Tours have with the missing relic. Louise and Sylvain will discover the rich historical and religious heritage of the city as the secular mother and pious son come to some sort of a reconciliation.