The American photography student Josh gets involved in a mysterious and deadly intrigue, when he takes pictures during an attempt on the top model Francesca's life.

A man and a woman quarrel over an old building, a heritage they share. Their opposing characters make the situation conflictual.

In Paris , Commissioner Stan Jalard and Inspector Simon Lecache plan to quit the police to go and enjoy a more peaceful life in the West Indies. In a nightclub, during a routine visit, they spot Schneider, a dreaded gangster and public enemy. At the time of his arrest, Simon is killed at close range by the criminal. Stan then decides to stay in the police to avenge Simon. Being the godfather of Christian, Simon's son, who sometimes lives in a boarding school, sometimes at home, he takes charge of his education. Two years later, Stan has been promoted, and he's told that Schneider had resurfaced in the capital. A long hunt begins.

With an off-beat sense of humor to match its erratic central character, this original comedy-drama features Jean-Philippe Ecoffey as Yves, a young man who works as a cop at night. The catch is that Yves turns to petty crime during the day, partly to impress Aurore (Aurelle Doazan), a nurse he idolizes from afar. His criminal hobby seems hard to understand, since it's doubtful that they will really get him anywhere with Aurore; besides, she already has a boyfriend. Nevertheless, Yves starts out by robbing a post office and ends up trying to run over Aurore's boyfriend, an act which finally gets him into serious trouble.

Detective Frank Zodiac is a cop traumatized by the death of his wife in a car accident that also left his daughter in a coma. This tragedy prevented him from being present to apprehend the dangerous gangster Gus Sabor, who was then able to escape from law enforcement. Three years later, Frank and Gus' paths cross again. Frank then sets out to pursue the criminal through Paris.

The series follows the adventures of lighthearted Jean-Paul Moulin, a police Commissaire, and his team as they solve crimes.