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.

When Peter, Margaux's American writer husband, leaves Paris in a funk and heads home, she finds herself the single parent of two near teens. She also gets a new assignment at work: to find, sign, and promote new rock singers. She discovers a duo, Jeremy and Michel, and jump-starts their music careers. Jeremy is attracted to the older Margaux, asserts himself with her, befriends her children, and neglects Michel and their music. The kids go to New York to be with their father Peter, freeing Margaux to respond to Jeremy. Does that relationship have any future? And what of the musical duo?