Several known criminals already have been murdered by a professional killer, leaving no trace but the "ace" game card. The police suspects a new mob is trying to take over the district. The investigating police officer Jan is victimized by a bomb himself, when he's at his girlfriend Daniela's father's Italian restaurant. Although paralyzed and suspended from work, the tuff cop continues to investigate and takes revenge on the gangsters who did this to him.

On the island of Jersey, off the French coast, Mélanie, a beautiful woman gifted with a captivating personality, enjoys having unimportant love affairs that her husband Victor, a perfumer older than her, seems to endure with total indifference.

Yves Dorget, major reporter in a daily newspaper, finds on an "affair" part of a simple news item Catherine Carré, his former friend, editor and chief and star presenter of a television newscast.