The son of an Algerian immigrant Idir is a disappointment to his doctor father. Torn between his wealthy school friends and his neighborhood pals who range from petty thieves to professional criminals Idir operates easily between worlds and yet is at home nowhere. Without much effort Idir becomes one of the Parisian upper crusts most soughtout private dicks thanks to his understanding of the needs of his privileged clients. The only thing standing in his way is Idirs unfortunate habit of crying