Regina meets charming Joshua while vacationing in Martinique, as she contemplates ending her whirlwind marriage to enigmatic Charlie. Upon her return to Paris, she finds that both her apartment and her bank account have been emptied, and her husband has been murdered. The more Reggie learns, the more she realizes the scope of the puzzle which she must solve to protect herself from ever-increasing danger.
Anne, who has just had an argument with her boyfriend Vassili, is put up for the night by Jacques and Odile, a couple of friends. But when Jacques takes her home the next day, he is arrested by the police, who mistake him for Vassili. In reality, Vassili is a terrorist.
Phillipe and Esther live an apparently idyllic life with their daughter, Elise. In an attempt to preserve this bliss, Phillipe decides that he and Esther should each have affairs, being sure to tell each other openly about them. The plan backfires with tragic results as Phillipe becomes engulfed in jealously.
The guardian of a nursing home lends a compassionate ear to the complaints of two new pensioners who love each other and have only one dream: to see the sea. To help them realize their dream, the brave man steals the car of the director. She quickly discovers the crime and drags her pale husband to the pursuit of the trio, aboard a tanker truck...