François Sentinelle has two lives. During the day, he is the most famous cop of Réunion Island, known for his tough methods and flowery shirts, pursuing criminals in his famous yellow defender. But the rest of the time, Sentinelle is also a charming singer.

Klara who is thirty-three years old. She is an interpreter in the French Army. After experiencing the horrors of war in Syria, she was transferred to Nice as part of Operation Sentinel. There, with her mother and her sister Tania, she tries to rebuild herself. But one evening, after going to a nightclub, Tania is found half-dead on the beach. She was raped and beaten up. Klara will then do everything to find the attackers and avenge her sister. This merciless hunt will lead her in the footsteps of Yvan Kadnikov, the son of a powerful Russian oligarch of the French Riviera.