At the age of 42, Pierre is really living. A supervisor in a building firm, he is having an affaire with a 26-year-old secretary in the same firm. He is a spender, proud of his car, likes to dream about holidays. He enjoys sport, music, dancing. . . . What is there more? Well, a new apartment that he decides to buy.

But then something happens which destroys the balance of this secure existence, and shatters his bland and soigne self-confidence. . . .