Vincent is a teenager who has been tenderly raised by his mother, Marie,
but she has always kept from him the name of his father. The adolescent
is curious to know the identity of his father and, after some probing, discovers
that the absent parent is Oscar Pormenor, an egoistical and cynical man who
works in Paris as a publisher. Determined to get even with his father,
Vincent embarks on a violent plan of revenge, but a chance encounter with
Joseph, a man living on the margins, is about to change his life, as well
as that of his mother...